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noun side·line \-ˌlīn\

Simple Definition of sideline

  • : a line that marks the outside edge of a sports field or court

  • : the space outside the area where a game is played on a field or court

  • : a job that is done in addition to your main job

Source: Merriam-Webster's Learner's Dictionary

Full Definition of sideline

  1. 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. 2a :  a line of goods sold in addition to one's principal lineb :  a business or activity pursued in addition to one's regular occupation

  3. 3a :  the space immediately outside the lines along either side of an athletic field or courtb :  a sphere of little or no participation or activity —usually used in plural

Examples of sideline in a sentence

  1. She makes and sells jewelry as a sideline.

Circa 1862

First Known Use of sideline

circa 1862



transitive verb side·line

Simple Definition of sideline

  • : to prevent (a player) from playing in a game especially because of injury, illness, etc.

Source: Merriam-Webster's Learner's Dictionary

Full Definition of sideline

  1. :  to put out of action :  put on the sidelines


First Known Use of sideline


Rhymes with sideline

A-line, affine, airline, align, alkyne, alpine, assign, at sign, balkline, baseline, beeline, benign, bloodline, blue line, blush wine, bovine, bowline, branchline, breadline, bright-line, buntline, bustline, byline, call sign, canine, caprine, carbine, carmine, cervine, chow line, clothesline, cloud nine, coastline, combine, compline, condign, confine, consign, corvine, cosign, cutline, dateline, deadline, decline, define, design, divine, dragline, driveline, earthshine, Einstein, eiswein, end line, enshrine, entwine, equine, ethyne, fall line, fault line, feline, ferine, first-line, flatline, flight line, foul line, fräulein, frontline, front line, goal line, gold mine, grapevine, guideline, hairline, hard-line, hard pine, headline, hemline, high sign, hipline, Holbein, hotline, ice wine, incline, indign, in fine, in-line, Irvine, jawline, jug wine, landline, land mine, lang syne, lifeline, load line, longline, lupine, mainline, main line, malign, midline, moline, moonshine, neckline, off-line, old-line, online, opine, outline, outshine, ovine, Pauline, peace sign, Petrine, pipeline, piscine, pitch pine, plotline, plumb line, plus sign, pontine, porcine, potline, pound sign, propine, punch line, rapine, recline, redline, red pine, refine, reline, repine, resign, Rhine wine, ridgeline, roofline, Sabine, saline, Scotch pine, scrub pine, setline, shoreline, short line, sight line, skyline, snow line, soft-line, spring line, straight-line, strandline, straw wine, streamline, strip mine, strychnine, subline, sunshine, supine, syncline, taurine, tie-line, times sign, topline, touchline, towline, tramline, trapline, tree line, trephine, trotline, truckline, trunk line, tumpline, turbine, untwine, ursine, vespine, V sign, vulpine, waistline, white line, white pine, white wine, woodbine, yard line, zebrine, Z line

SIDELINE Defined for Kids


noun side·line \ˈsīd-ˌlīn\

Definition of sideline for Students

  1. 1 :  a line marking the side of a playing field or court

  2. 2 :  a business or a job done in addition to a person's regular occupation

Learn More about sideline

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of, relating to, or near a shore

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