From Longman Dictionary of Contemporary Englishsidelineside‧line1 /ˈsaɪdlaɪn/ noun 1 [countable]JOB/WORK an activity that you do as well as your main job or business, in order to earn more moneyas a sideline Zoë does a bit of freelance photography as a sideline.2 → on the sidelines3 → sidelines4 [countable]DS a line at the side of a sports field, which shows where the players are allowed to play
Examples from the Corpus
sideline• Tracy intended to run the seed business as a sideline, but it soon became her full-time job.• Many of these doctors offer weight-loss programs as a sideline to their regular practices of stitching up fingers and diagnosing strep throat.• Over his 25-year career, recording has been a sideline to performing.• I sometimes take wedding photographs on Saturdays -- it's a nice little sideline and it gives me a bit of extra cash.• On the other hand, fitting the SIMMs themselves is a lucrative sideline.• And with what confidence we lured the hesitant from the sidelines.• Alyssia watched from the sidelines, feeling like a fish out of water, watching Piers from under her lashes.• These must be weighed against the risks in standing on the sidelines.• The Raiders made theirs on the sideline watching Testaverde realize that he just might be able to win this darn thing.• A bad tendon strain in Aldaniti's off-foreleg had to be fired, and he was on the sidelines for eighteen months.• They throw to the backs so often in the flat that their field tilts toward the sidelines.as a sideline• Keen on promoting venture capital, Viney owns a chain of wine bars as a sideline.• One summer in Delaware I bought a chicken from a fisherman who raised birds as a sideline.• In 1865, Richard Arkell started brewing, for corn millers often took up brewing as a sideline.• In this case, what started out as a sideline soon became of major importance.• Many of these doctors offer weight-loss programs as a sideline to their regular practices of stitching up fingers and diagnosing strep throat.• So as a sideline I managed to persuade them to put out an album of the more acoustic stuff.sidelinesideline2 verb [transitive] PLAY A GAME OR SPORT#if you are sidelined, you are unable to play in a sports game because you are injured, or unable to take part in an activity because you are not as good as someone else Owen was once again sidelined through injury.Grammar Sideline is usually passive.→ See Verb tableExamples from the Corpus
sideline• Horn will be sidelined for three weeks by a sprained ankle.• Fullback Marty Roebuck could also miss out as an ankle operation is likely to sideline him for six to seven weeks.• And coach John Monie let Joe Lydon undergo a twice-postponed knee operation, which will sideline him for up to three weeks.• It will sideline the talented right-back for up to six weeks. 