sand crack

English Thesaurus

1. a fissure in the wall of a horse's hoof often causing lameness (noun.state)

hypernym	:	animal disease,
definition	:	a disease that typically does not affect human beings (noun.state)

hyponym	:	toe crack,
definition	:	a crack on the forepart of a horse's hindfoot (noun.state)

hyponym	:	quarter crack,
definition	:	a crack on the inside of a horse's forefoot (noun.state)