An iron bent to the form of an ox-bow, with the two ends perforated to receive a pin, used on the end of a cart-neap, to hold the chain of the forward horse or oxen; or, a draft-iron on a plow. Provincial in New England.--Webster.
·noun A piece of metal bent in the form of an oxbow, with the two ends perforated to receive a pin, ...
Webster's Dictionary of the English Language