adverb & adjective. Sideways.

Toward one side; in an inclining position: as, to hold the head sidewise.

Laterally; on one side: as, the refraction of light sidewise.

Directed or tending to one side; lateral in course or bearing; sideling: as, a sidewise glance; to make a sidewise leap.

adverb. A heavy swinging blow from the side, which disables an adversary.

adverb. sideways

adverb. with one side forward or to the front

adverb. toward one side

adverb. from the side; obliquely

"The man, half-slipping sidewise from the saddle, so as to fall clear if the mare toppled backward, threw his weight to the front and alongside her neck."