- to move or distract from the main subject or course.
- to move from the main track to a siding, as a train.
- any railroad track, other than a siding, that is auxiliary to the main track.
- a path, position, project, topic, etc., of less importance than the main one: On a sidetrack to this thread on workplace safety, let me just say a little about office footwear.
- to distract or be distracted from a main subject or topic
- a railway siding
- the act or an instance of sidetracking; digression
