Definition of siding

• p. pr.& vb. n. - of Side
• n. - Attaching one's self to a party.
• n. - A side track, as a railroad; a turnout.
• n. - The covering of the outside wall of a frame house, whether made of weatherboards, vertical boarding with cleats, shingles, or the like.
• n. - 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.