Any object used as a wedge or filler, especially when placed behind a wheel to prevent it from rolling.
Any fitting or fixture used to restrict movement, especially movement of a line; traditionally was a fixture near a bulwark with two horns pointing towards each other, with a gap between where the line can be inserted.
Middle English, from Anglo-Norman choque (compare modern Norman chouque), from an Old Northern French variant of Old French çouche, çouche, of Celtic origin, from Gaulish *'śokka (compare Breton soc’h ("thick"), Old Irish tócht), itself borrowed from Frankish *stokk, from Proto-Germanic *stukkaz. stock.