sideline

Meanings

1. A line at the side of something.
2. Something that is additional or extra or that exists around the edges or margins of a main item.
3. A line for hobbling an animal by connecting the fore and the hind feet of the same side.
4. A line defining the side boundary of a playing field. Used in Canadian football, field lacrosse and basketball.
5. The area outside the playing field beyond each sideline.
6. The outside or perimeter of any activity.
7. A secondary road, especially a byroad at right angles to a main road.
8. A side hustle.

1. To place on the sidelines; to bench or to keep someone out of play.
2. To remove or keep out of circulation or out of the focus.

Etymology

From side + line.