I've long envied people in the horse world who get a chance to drop this word into normal conversation once in a while.
noun 1. the highest part of a horse’s back, lying at the base of the neck above the shoulders. The height of a horse is
measured to the withers.
Etymology: 16th century, from Old English dialectical wiðer (“against”) because it is the part of the horse that pushes against a load.
Erin Bedford, writer.