plural of crotch chain

(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 roller chain

plural of cold chain

plural of chain of command

plural of choker chain

plural of decay chain

plural of door chain

plural of golden chain

plural of green chain