(rail transport) On a steam locomotive, an unpowered wheel or axle located behind the driving wheels.

On a steam locomotive, a railroad truck to which wheel axles (and, hence, wheels) for one or more coupled pairs of unpowered wheels are attached through bearings, located behind the driving wheels.

On a steam locomotive, an axle connecting a coupled pair of unpowered wheels located behind the driving wheels.

(aeronautics) The rearmost edge of a wing or other airfoil.

plural of trailing spring

A spring fixed in the axle box of the trailing wheels of a locomotive engine, and so placed as to assist in deadening any shock which may occur.

plural of trailing edge

(rail transport, plural only) A set of points at which two routes converge in the direction of travel.

plural of trailing wheel

present participle of trail behind