Siding /(?)/

Sid·ing

Siding

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. (Carp.)
  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. (Shipbuilding)