Noun

1. A building material which covers and protects the sides of a house or other building.

   Ugh. If there's one thing I can't stand it's cheesy vinyl siding.

2. A second, relatively short length of track just to the side of a railroad track, joined to the main track by switches at one or both ends, used either for unloading freight, or to allow two trains on a same track to meet (opposite directions) or pass (same direction).

Synonyms

Verb

1. Whenever he hears an argument, he can't help siding with one party or the other.