remuda

noun

re·​mu·​da ri-ˈmü-də 

-ˈmyü-

: the herd of horses from which those to be used for the day are chosen

Word History

Etymology

American Spanish, relay of horses, from Spanish, exchange, from remudar to exchange, from re- + mudar to change, from Latin mutare — more at mutable

First Known Use

circa 1892, in the meaning defined above