a hidden bomb or mine so placed that it will be set off by an unsuspecting person through such means as moving an apparently harmless object.
any hidden trap set for an unsuspecting person.
boo•by-trapPronunciation: (bOO'bē trap"), [key]
—v.t., -trapped, -trap•ping.
to set with or as if with a booby trap; attach a booby trap to or in.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.