The engineer of a locomotive.
A stocking without a foot, worn by coal miners at work.
A shot that comes to rest short of or on the far hog line and is removed from play
A marijuana cigarette
A chassis or framework-like structure underneath a railroad car to which wheel axles (and, hence, wheels) are attached through bearings. (Not to be confused with railway truck or railtruck, which are British English synonyms of railroad car)