(American football) To alter the position of the device, a chain holding two sticks ten yards apart, used to initially determine the position of the line crossing which yields a first down for the offense, which may be moved by penalties or by the offense gaining a first down.

plural of chain drive

plural of roller chain

A type of chain drive used to transmit mechanical power in many kinds of machinery, such as conveyors and bicycles, consisting of a series of short cylindrical rollers held together by side links and driven by a sprocket.

(cycling) The tendency of a chain to stick to chainrings and be sucked up into the bicycle instead of coming off the chainring, especially if it is worn or if conditions are dirty.

(cycling) The slapping sound of the bicycle's chain against the chainstays while riding over rough terrain.

(Australia) Alternative form of hobble chain

(Australia) Chain used to fetter horses or cattle.

plural of cold chain

(automotive) a chain which connects the crankshaft and the camshaft(s) of an engine, synchronising the operation of the inlet and exhaust valves.