Quick definitions from WordNet (trap)

▸ noun:  a device in which something (usually an animal) can be caught and penned
▸ noun:  a light two-wheeled carriage
▸ noun:  a device to hurl clay pigeons into the air for trapshooters
▸ noun:  drain consisting of a U-shaped section of drainpipe that holds liquid and so prevents a return flow of sewer gas
▸ noun:  informal terms for the mouth
▸ noun:  something (often something deceptively attractive) that catches you unawares ("The exam was full of trap questions")
▸ noun:  a hazard on a golf course
▸ noun:  the act of concealing yourself and lying in wait to attack by surprise
▸ verb:  place in a confining or embarrassing position ("He was trapped in a difficult situation")
▸ verb:  to hold fast or prevent from moving
▸ verb:  catch in or as if in a trap ("The men trap foxes")
▸ verb:  hold or catch as if in a trap ("The gaps between the teeth trap food particles")

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▸ Also see trap
▸ Word origin