Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “sideline”

sideline

noun [C] (SPORT)    /ˈsaɪd.laɪn/ mainly US
a line that shows the position of the side areas of play, especially for football: The ball fell just inside/on/outside the sideline.Surfaces on which sports take place
(Definition of sideline noun (SPORT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of sideline

Definitions of “sideline” in other dictionaries

Word of the Day

exercise

physical activity that you do to make your body strong and healthy

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More