side(redirected from side lines)
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a. any line segment forming part of the perimeter of a plane geometric figure
b. another name for face
2. either half of a human or animal body, esp the area around the waist, as divided by the median plane
3. Billiards snooker spin imparted to a ball by striking it off-centre with the cue
One of the line segments that bound a polygon.
One of the two rays that extend from the vertex of an angle.
The side of a mountain or an island away from the direction from which wind is blowing. On the water, from the observer's viewpoint, the lee is the direction to which the wind is blowing. Also called the leeward (pronounced “loo-ard”) side.