Definition of trap noun from the Oxford Advanced Learner's Dictionary

Oxford3000

trap

noun
træp
 
; træp
 
 
 

for animals

1 a piece of equipment for catching animalsa fox with its leg in a trapA trap was laid, with fresh bait. see also mousetrap
 

trick

2 a clever plan designed to trick somebody, either by capturing them or by making them do or say something that they did not mean to do or sayShe had set a trap for him and he had walked straight into it. see also booby trap, radar trap, sand trap, tourist trap
 

bad situation

3 [usually singular] an unpleasant situation from which it is hard to escapethe unemployment trapSome women see marriage as a trap. see also deathtrap see also poverty trap
 

carriage

4 a light carriage with two wheels, pulled by a horsea pony and trap
 

mouth

5 (slang) mouth
Synonym
gob
Shut your trap! (= a rude way of telling somebody to be quiet)to keep your trap shut (= to not tell a secret)
 

for racing dog

6 a cage from which a greyhound (= a type of dog) is let out at the start of a race
 

in golf

7 (North American English) = bunker
Idioms

to fall into/avoid the trap of doing something

to do/avoid doing something that is a mistake but which seems at first to be a good idea
Parents often fall into the trap of trying to do everything for their children.
more at spring a trap at spring v.