ˈäs(ə)lə̇t noun
( -s )
Etymology: French, literally, small bone, from Old French, from ossel bone (from os bone — from Late Latin ossum, from Latin oss-, os — + -el ) + -et
: an exostosis on the leg of a horse ; especially : one on the lateral or anterior aspect of the fetlock occurring chiefly in horses subjected to severe strain while young