Siding

Part of speech: noun (n.)

1. Attaching one's self to a party.

2. A side track, as a railroad; a turnout.

3. The covering of the outside wall of a frame house, whether made of weatherboards, vertical boarding with cleats, shingles, or the like.

4. 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.