(rail transport) The specified distance between the rails of a railway.

Alternative spelling of singletrack

plural of single track

Alternative form of trackbed

plural of track bed

(rail transport) To lay slab track on a section of railway line.

(rail transport) Synonym of four-tracked.

(idiomatic) That said to be possessed by someone who is obsessed with something or only able to think of one thing.

(idiomatic) The part of town that is not inhabited by the wealthy. An area where the working class, poor or extremely poor live.

Alternative spelling of one-track mind