/ ˈsaɪdlaɪn; NAmE / noun , verb
■ noun
1.
[ C ] an activity that you do as well as your main job in order to earn extra money
2.
sidelines [ pl. ] the lines along the two long sides of a sports field, tennis court , etc. that mark the outer edges; the area just outside these :
The coach stood on the sidelines yelling instructions to the players.
•
IDIOMS
- on / from the sidelines
■ verb [ vn ] [ usually passive ]
1.
to prevent sb from playing in a team, especially because of an injury :
The player has been sidelined by a knee injury.
2.
to prevent sb from having an important part in sth that other people are doing :
The vice-president is increasingly being sidelined.