(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.

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

(UK dialectal) Widely; wide; far.

To clear, tidy or sort.

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

(cricket) The leg side.

Alternative form of onside

The side of a cassette tape or record that holds the primary track. / (by extension) The track on the A-side of a tape or record. / The first track on a compact disc single.

simple past tense and past participle of side

(rugby) Called by the referee at the end of a match, as no side has the next possession of the ball.