sideline

Word parts

side + line

Pronunciation

• IPA ^(key): /ˈsaɪdlaɪn/

• Audio (US)

  (file)

Noun

Singular sideline

Plural sidelines

1. (countable) A sideline is a line at the side of something.
2. (countable) (sports) A sideline is a line that defines the side boundary of a playing area.
3. (sports) (usually plural) A sideline is the area outside the playing field beyond each sideline.

Verb

Plain form sideline

Third-person singular sidelines

Past tense sidelined

Past participle sidelined

Present participle sidelining

1. (transitive) (sports) If you sideline someone, you place them keep someone out of play.