(figuratively) To leave or depart.

(idiomatic) A written record, history, or collection of evidence. / (idiomatic) Records left by a person or organization in the course of activities.

(idiomatic) To show the way or proceed rapidly. / (idiomatic) To set precedent or do something novel; to break new ground.

(Britain) A contrail.

A contrail; a visible line of condensation flowing from the edge of an airplane wing or similar structure.

A contrail

A blend of foods for snacking on the go, as during hikes, usually consisting of some combination of dried fruit, nuts, seeds, granola, and sometimes small candies, cereal, etc.

(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.