side-line in English

noun

1

an activity done in addition to one's main job, especially to earn extra income.

a sideline career as a stand-up comic

synonyms: secondary occupation, second job, hobby, leisure activity/pursuit, recreation

2

either of the two lines bounding the longer sides of a football field, basketball court, tennis court, or similar playing area.

You basically start out at half court, groups of two, and play one on one from the sideline to an imaginary line that divides the court.

verb

1

cause (a player) to be unable to play on a team or in a game.

he has been sidelined for the last six weeks with a fractured wrist

synonyms: remove, take out, bench

noun

secondary occupation, second job, hobby, leisure activity/pursuit, recreation
hobby, by-line, avocation, pursuit
out of bounds

verb

remove, postpone
remove, take out, bench
postpone, suspend, delay, defer, shelve, put on the back burner

Use "side-line" in a sentence

1. Office-side line concentrator, access controller, and computer program therefor

2. Because: they have a common side (line CB) they have a common vertex (point B) What Is and Isn't an Adjacent Angle.