Definitions For Sideline

noun

• An auxiliary activity
• An auxiliary line of merchandise
• A line that marks the side boundary of a playing field
• A line that marks the outside edge of a sports field or court
• The space outside the area where a game is played on a field or court
• A job that is done in addition to your main job

verb

• Remove from the center of activity or attention; place into an inferior position
• To prevent (a player) from playing in a game especially because of injury, illness, etc.