trap

trap1
traplike, adj.
/trap/, n., v., trapped, trapping.
n.
1. a contrivance used for catching game or other animals, as a mechanical device that springs shut suddenly.
2. any device, stratagem, trick, or the like for catching a person unawares.
3. any of various devices for removing undesirable substances from a moving fluid, vapor, etc., as water from steam or cinders from coal gas.
4. Also called air trap. an arrangement in a pipe, as a double curve or a U-shaped section, in which liquid remains and forms a seal for preventing the passage or escape of air or of gases through the pipe from behind or below.
5. traps, the percussion instruments of a jazz or dance band.
6. Trapshooting, Skeet. a device for hurling clay pigeons into the air.
7. the piece of wood, shaped somewhat like a shoe hollowed at the heel, and moving on a pivot, used in playing the game of trapball.
8. the game of trapball.
9. See trap door.
10. Sports. an act or instance of trapping a ball.
11. Also called mousetrap, trap play. Football. a play in which a defensive player, usually a guard or tackle, is allowed by the team on offense to cross the line of scrimmage into the backfield and is then blocked out from the side, thereby letting the ball-carrier run through the opening in the line.
12. Slang. mouth: Keep your trap shut.
13. Chiefly Brit. a carriage, esp. a light, two-wheeled one.
v.t.
14. to catch in a trap; ensnare: to trap foxes.
15. to catch by stratagem, artifice, or trickery.
16. to furnish or set with traps.
17. to provide (a drain or the like) with a trap.
18. to stop and hold by a trap, as air in a pipe.
19. Sports. to catch (a ball) as it rises after having just hit the ground.
20. Football. to execute a trap against (a defensive player).
v.i.
21. to set traps for game: He was busy trapping.
22. to engage in the business of trapping animals for their furs.
23. Trapshooting, Skeet. to work the trap.
[bef. 1000; ME trappe (n.), trappen (v.), OE traeppe (n.), c. MD trappe (D trap) trap, step, staircase; akin to OE treppan to tread, G Treppe staircase]
Syn. 1, 2. TRAP, PITFALL, SNARE apply to literal or figurative contrivances for deceiving and catching animals or people. Literally, a TRAP is a mechanical contrivance for catching animals, the main feature usually being a spring: a trap baited with cheese for mice. Figuratively, TRAP suggests the scheme of one person to take another by surprise and thereby gain an advantage: a trap for the unwary.
A PITFALL is (usually) a concealed pit arranged for the capture of large animals or of people who may fall into it; figuratively, it is any concealed danger, error, or source of disaster: to avoid the pitfalls of life. A SNARE is a device for entangling birds, rabbits, etc., with intent to capture; figuratively, it implies enticement and inveiglement: the temptress' snare.
trap2
/trap/, n., v., trapped, trapping.
n.
1. traps, Informal. personal belongings; baggage.
v.t.
2. to furnish with or as with trappings; caparison.
[1300-50; ME trappe (n.), trappen (v.) < ?]
trap3
/trap/, n. Geol.
any of various fine-grained, dark-colored igneous rocks having a more or less columnar structure, esp. some form of basalt. Also called traprock.
[1785-95; < Sw trapp, var. of trappa stair (so named from the stepped appearance of their outcrops) < MLG trappe. See TRAP1]
trap4
/trap/, n. Scot.
a ladder or ladderlike device used to reach a loft, attic, etc.
[1750-60; < D: stepladder; see TRAP1]

* * *

      in physics, any location within a solid (generally a semiconductor or an insulator) that restricts the movement of electrons (electron) and holes (hole)—i.e., equivalent positive electrical charges that result from the absence of an electron within a crystal structure. A trap consists of either a chemical impurity or an imperfection in the regular spacing of the atoms that make up the solid. Traps play a significant role in photoconduction, luminescence, and the operation of various electronic devices because the ability of a solid to carry an electrical current depends on the flow of electrons and holes through the solid.

      A trap can capture and immobilize an electron or hole and prevent its recombination with the carrier of opposite charge as an electron-hole pair. Electrons and holes may break free from traps quickly, or they may remain there for an extended period of time (e.g., several months or longer). Charge carriers can be released from traps by the addition of energy, such as irradiating the solid with light or by heating it.

      in theatre, a concealed opening, usually in the stage floor, through which actors, props, and scenery can be brought on and off stage. Traps are used, often with elaborate and ingenious machinery, to create a great variety of stage effects, particularly the sudden appearance, disappearance, or apparent transformation of characters or objects on the stage.

      Certain types of traps have become more or less standard items of stage equipment. The corner trap, for example, is a small, square opening, usually located at the side of the stage, fitted with a trapdoor or flaps that can be lowered out of sight. Through it, standing figures or objects can be lifted onto the stage. When a sudden, mysterious appearance is required, a star trap is used. The star trap is a circular opening with a lid composed of wedge-shaped sections, individually hinged to the circumference. An actor, standing below on a heavily counterweighted platform, can be projected through the opening with great speed. The sections of the lid are pushed up as he passes and immediately fall back into place, thus concealing his point of entrance. Another common trap with a long history is the grave trap, a large, rectangular opening in the centre of the stage floor. It is named for its most famous use, as an open grave in the graveyard scene from Hamlet. Most traps and their mechanisms are designed so that they can be taken apart and moved to any point in the stage floor where they are required or can be stored when not in use.

* * *


Universalium. 2010.

Synonyms:

Look at other dictionaries:

  • trap — trap1 [trap] n. [ME trappe < OE træppe, akin to treppan, to step, Ger treppe, stairway < IE * dreb , to run, step, trip (var. of base * drā ) > Pol drabina, ladder] 1. any device for catching animals, as one that snaps shut tightly when… …   English World dictionary

  • Trap — Trap, v. t. [AS. treppan. See {Trap} a snare.] [1913 Webster] 1. To catch in a trap or traps; as, to trap foxes. [1913 Webster] 2. Fig.: To insnare; to take by stratagem; to entrap. I trapped the foe. Dryden. [1913 Webster] 3. To provide with a… …   The Collaborative International Dictionary of English

  • Trap — Trap, n. [OE. trappe, AS. treppe; akin to OD. trappe, OHG. trapo; probably fr. the root of E. tramp, as that which is trod upon: cf. F. trappe, which is trod upon: cf. F. trappe, which perhaps influenced the English word.] 1. A machine or… …   The Collaborative International Dictionary of English

  • Trap — Trap, n. [Sw. trapp; akin to trappa stairs, Dan. trappe, G. treppe, D. trap; so called because the rocks of this class often occur in large, tabular masses, rising above one another, like steps. See {Tramp}.] (Geol.) An old term rather loosely… …   The Collaborative International Dictionary of English

  • trap — s.n., interj. 1. s.n. Mers în fugă al calului, cu viteză mijlocie (între pas şi galop), animalul păşind în acelaşi timp cu un picior din faţă şi cu piciorul de dinapoi opus acestuia. ♦ Zgomot făcut de un cal care merge în acest fel. 2. interj.… …   Dicționar Român

  • Trap — Trap, a. Of or pertaining to trap rock; as, a trap dike. [1913 Webster] …   The Collaborative International Dictionary of English

  • Trap — Trap, v. t. [imp. & p. p. {Trapped}; p. pr. & vb. n. {Trapping}.] [Akin to OE. trappe trappings, and perhaps from an Old French word of the same origin as E. drab a kind of cloth.] To dress with ornaments; to adorn; said especially of horses.… …   The Collaborative International Dictionary of English

  • Trap — Trap, v. i. To set traps for game; to make a business of trapping game; as, to trap for beaver. [1913 Webster] …   The Collaborative International Dictionary of English

  • trap — [n] snare, trick allurement, ambuscade, ambush, artifice, bait, booby trap*, come on*, conspiracy, deception, decoy, device, dragnet, enticement, feint, gambit, hook*, intrigue, inveiglement, lasso*, lure, machination, maneuver, net, noose,… …   New thesaurus

  • TRAP — (Abkz.) steht für Telomeric Repeat Amplification Protocol. Die TRAP Methode ist ein molekularbiologisches Nachweisverfahren zur quantitativen Bestimmung der Aktivität des Enzyms Telomerase. Methode Das Gewebe oder die Zellen, bei denen die… …   Deutsch Wikipedia

  • Trap — ist eine Disziplin des Wurfscheibenschießens, bei der die Scheibe vom Schützen wegfliegt ein molekularbiologisches Nachweisverfahren, siehe TRAP eine spezielle Ausnahme oder Ausnahmesituation bzw. Ausnahmebehandlung (engl. exception) in der… …   Deutsch Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.