(transitive) To choose to take the same point of view as (someone).

(UK archaic, dialectal, Northern England, Scotland) Wide; large; long, pendulous, hanging low, trailing; far-reaching. / (Scotland) Far; distant.

(intransitive) To ally oneself, be in an alliance, usually with "with" or rarely "in with" / To lean on one side. / (transitive, obsolete) To be or stand at the side of; to be on the side toward.

Being on the left or right, or toward the left or right; lateral. / Indirect; oblique; incidental.

(UK dialectal) Widely; wide; far.

To clear, tidy or sort.

A bounding straight edge of a two-dimensional shape. / A flat surface of a three-dimensional object; a face. / One half (left or right, top or bottom, front or back, etc.) of something or someone.

(rail transport) A second, relatively short length of track just to the side of a railroad track, joined to the main track by switches at one or both ends, used either for loading or unloading freight, storing trains or other rail vehicles; or to allow two trains on a same track to meet (opposite directions) or pass (same direction) (the latter sense is probably an American definition).

present participle of side

(Canada, US) A building material which covers and protects the sides of a house or other building.