noun attaching one's self to a party.
2. siding ·noun a side track, as a railroad; a turnout.
3. siding ·p.pr. & ·vb.n. of side.
4. siding ·noun the covering of the outside wall of a frame house, whether made of weatherboards, vertical boarding with cleats, shingles, or the like.
5. siding ·noun 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.