(literally) Beside or alongside one another; close to one another and abreast. / (figuratively) In peace. / (figuratively) With a common purpose.

Moving horizontally, from one side to another and back.

Alternative spelling of side-to-side

plural of side-by-side

(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.