remuda
/rɪˈmjuːdə/noun
- N. Amer. a herd of horses that have been saddle-broken, from which ranch hands choose their mounts for the day〈北美〉（供牧场工人挑选作为当天坐骑用的）加鞍备用马群。
词源
late 19th cent.: via American Spanish, from Spanish, literally 'exchange, replacement'.