siding

plural sidings

1. CanadaUScountableuncountableA 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.

   Synonyms: cladding

1. gerundparticiplepresentpresent participle and gerund of side

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

plural sidings

1. rail transportA 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 loading or unloading freight, storing trains or other rail vehicles; or to allow two trains on a same track to meet (opposite directions) or pass (same direction) (the latter sense is probably an American definition).

   They slept where they could, sometimes in an empty truck on a siding near the station, sometimes in a cart behind a warehouse; [...]

   1919, W[illiam] Somerset Maugham, “chapter 47”, in The Moon and Sixpence, [New York, N.Y.]: Grosset & Dunlap Publishers […], →OCLC

   1 more example

   Laid out over six square kilometres, Sellafield is like a small town, with nearly a thousand buildings, its own roads and even a rail siding – all owned by the government, and requiring security clearance to visit.

   December 15 2022, Samanth Subramanian, “Dismantling Sellafield: the epic task of shutting down a nuclear site”, in The Guardian