trap
nounA contrivance for catching and holding animals, as a concealed pit or a clamplike device that springs shut suddenly.
nounA stratagem for catching or tricking an unwary person.
nounA confining or undesirable circumstance from which escape or relief is difficult.
nounA device for sealing a passage against the escape of gases, especially a U-shaped or S-shaped bend in a drainpipe that prevents the return flow of sewer gas by means of a water barrier.
nounA device that hurls clay pigeons into the air in trapshooting.
nounA land hazard or bunker on a golf course; a sand trap.
nounA measured length of roadway over which electronic timers register the speed of a racing vehicle, such as a dragster.