Definition of "sideline" []

• Sports A line along either of the two sides of a playing court or field, marking its limits. (noun)
• Sports The space outside such limits, occupied by coaches, inactive players, and spectators. (noun)
• The position or point of view of those who observe rather than participate in an activity: the political sidelines. (noun)
• A subsidiary line of merchandise. (noun)
• An activity pursued in addition to one's regular occupation. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Nick Barnett is able to play sideline to sideline from the middle, and weakside linebacker A.J. Hawk is capable against the run or the pass."
• "And once it became clear that he would undergo a hearing, why did Griffin sideline himself with the colorful observation that undergoing Senate confirmation would be "like volunteering to stand in front of a firing squad in the middle of a three-ring circus?""
• ""The only thing keeping that capital on the sideline is the ability to have more comfort about what value is.""