e·quine 
(ēkwīn′, ĕkwīn′)
(ēkwīn′, ĕkwīn′)adj.
1. Of, relating to, or characteristic of a horse.
2. Of or belonging to the family Equidae, which includes the horses, asses, and zebras.
[Latin equīnus, from equus, horse; see ekwo- in the Appendix of Indo-European roots.]
equine′ n.