Английский разговорный словарь (основной) - sideline

ˈsaɪdlaɪn n. & v. --n. 1 work etc. done in addition to one's main activity. 2 (usu. in pl.) a a line bounding the side of a hockey-pitch, tennis-court, etc. b the space next to these where spectators etc. sit. --v.tr. US remove (a player) from a team through injury, suspension, etc. øon (or from) the sidelines in (or from) a position removed from the main action.