1
: a line at right angles to a goal line or end line and marking a side of a court or field of play for athletic games
2
a
: a line of goods sold in addition to one's principal line
b
: a business or activity pursued in addition to one's regular occupation
3
a
: the space immediately outside the lines along either side of an athletic field or court
b
: a sphere of little or no participation or activity
—usually used in plural
Examples of sideline in a Sentence
Noun
She makes and sells jewelry as a sideline.
Recent Examples on the Web
Sam McDowell 13, Kansas City Star, 13 Oct. 2025
But The Athletic spoke with many of the people who were involved in the Hail Mary last season, some who watched in disbelief on the sideline and the legendary play-by-play man who called it for CBS.
—David Aldridge, New York Times, 12 Oct. 2025
Elliott Teaford, Oc Register, 13 Oct. 2025
With Seth Rollins now sidelined, WWE will likely have to make an official announcement regarding the status of the World Heavyweight Championship on tonight's episode of Raw.
—Andrew Ravens, MSNBC Newsweek, 13 Oct. 2025
See All Example Sentences for sideline
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Noun
With the Chiefs facing fourth-and-3 inside the 10-yard-line, kicker Harrison Butker took a couple of steps off the sideline before Reid waved him back.
—Sam McDowell 13, Kansas City Star, 13 Oct. 2025
But The Athletic spoke with many of the people who were involved in the Hail Mary last season, some who watched in disbelief on the sideline and the legendary play-by-play man who called it for CBS.
—David Aldridge, New York Times, 12 Oct. 2025
Verb
Nyheim Hines, who is filling in as the Chargers’ kick returner while Derius Davis is sidelined by a knee injury, set up the winning drive by returning a kickoff 40 yards to his own 41-yard line.
—Elliott Teaford, Oc Register, 13 Oct. 2025
With Seth Rollins now sidelined, WWE will likely have to make an official announcement regarding the status of the World Heavyweight Championship on tonight's episode of Raw.
—Andrew Ravens, MSNBC Newsweek, 13 Oct. 2025
See All Example Sentences for sideline
Cite this Entry
“Sideline.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sideline. Accessed 19 Oct. 2025.
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