Sid"ing (?), n.
Attaching one's self to a party.
A side track, as a railroad; a turnout.
The covering of the outside wall of a frame house, whether made of weatherboards, vertical boarding with cleats, shingles, or the like.
The thickness of a rib or timber, measured, at right angles with its side, across the curved edge; as, a timber having a siding of ten inches.
© Webster 1913.