Side line

Webster's Dictionary of the English Language

·add. ·- A line pert. or attached to the side of a thing.

II. Side line ·add. ·- A secondary road; ·esp., a byroad at right angles to a main road.

III. Side line ·add. ·- Specif., a line for hobbling an animal by connecting the fore and the hind feet of the same side.

IV. Side line ·add. ·- A line of goods sold in addition to one's principal articles of trade; a course of business pursued aside from one's regular occupation.