A coarse, stout kind of cloth for overcoats.

Agkistrodon contortrix, the copperhead, a venomous viper found in the United States. / Pituophis melanoleucus melanoleucus, the northern pine snake, a harmless colubrid found in North America.

A locomotive going in advance of a train to make sure that the way is clear.

A pea coat.

(bridge building) A conical nut applied temporarily to the threaded end of a pin, to protect the thread and guide the pin when it is driven into a hole.

A kind of boat used to transport pilots between land and the inbound or outbound ships that they are piloting.

plural of pilot balloon

A small hand-operated valve to let in liquid to operate a valve that is difficult to turn by hand.

plural of pilot valve

plural of pilot wheel