From Longman Dictionary of Contemporary Englishbooby trapˈbooby trap, booby-trap noun [countable] 1 PMWa hidden bomb that explodes when you touch something else that is connected to it He lost both legs in a booby trap bomb blast.2 JOKEa harmless trap that you arrange for someone as a joke —booby-trapped adjective —booby trap verb [transitive]
Examples from the Corpus
booby trap• Detectives want to establish whether Mr Jowett, 43, was killed by a booby trap or in an elaborate suicide.• We must have moved all of a foot and a half before we hit a booby trap.• If it really was a bomb, unzipping the cover would almost certainly trip a booby trap. 