In England equerries are officers of the royal household in the department of the Master of the Horse.
Eq"ue*ry (?), n. Same as Equerry.
E*ques"tri*an (?), a. [L. equester, from eques horseman, fr. equus horse: cf. F. équestre. See Equine.] 1. Of or pertaining to horses or horsemen, or to horsemanship; as, equestrian feats, or games.