booby trap(redirected from booby-trap)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to booby-trap: unwary
n. a device set up to be triggered to harm or kill anyone entering the trap, such as a shot gun which will go off if a room is entered, or dynamite which will explode if the ignition key on an auto is turned. If a person sets up such a trap to protect his/her property he/she will be liable for any injury or death even to an unwanted intruder such as a burglar. Setting a booby trap is also a crime.