A device that adsorbs nitrogen oxides produced by a lean-burn engine, such as a diesel.

(simile) A remarkably efficient mind; great skill in learning and/or reasoning.

The sport, similar to skeet, of shooting at thrown targets with a shotgun.

A participant in the sport of trapshooting.

plural of trapshooter

Alternative spelling of trap set

plural of trapstick

A stick used in playing the game of trapball. / (figuratively, dated) A slender leg.

plural of trapset