This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A U-shaped metal piece with holes in each end through which a pin or bolt is run, used as a fastening device.

n. A U-shaped coupling having holes at each end, through which a bolt is run; used especially to fit attachments to a tractor or other vehicle as it allows a degree of rotation about the bolt.

n. A piece of metal bent in the form of an oxbow, with the two ends perforated to receive a pin, used on the end of the tongue of a plow, wagen, etc., to attach it to a draft chain, whiffletree, etc.; -- called also clavel, clevy.

n. An iron bent in the form of a stirrup, horseshoe, or the letter U, with the two ends perforated to receive a pin, used to connect a draft-chain or whipple-tree to a cart or plow.

n. a coupler shaped like the letter U with holes through each end so a bolt or pin can pass through the holes to complete the coupling; used to attach a drawbar to a plow or wagon or trailer etc.

"Insert the hook at the end of the wire rope into the clevis."

coupling    coupler   

downhill clevis   

clavel    clevy   

clevis pin   

forend    trunnion    spring-loaded    pintle    quick-release    cattel    quick-disconnect    absorber    backplate    detent