Webster’s Revised Unabridged Dictionary · 1913
Equerry
Eq′uer·ry, n.; pl. Equerries (#). [F. écurie stable, for older escurie, escuirie (confused somewhat with F. écuyer, OF. escuyer, squire), LL. scuria, OHG. skiura, scūra, barn, shed, G. scheuer, from a root meaning to cover, protect, and akin to L. scutum shield. See Esquire, and cf. Ecurie, Querry.] 1. A large stable or lodge for horses. Johnson.
2. An officer of princes or nobles, charged with the care of their horses.
☞ In England equerries are officers of the royal household in the department of the Master of the Horse.