int. Also woyh. [Exclamatory.] A call to a horse to stop. (Cf. WAY, WO, WHOA int.)
1797. T. Morton, Cure for Heart-ache, I. i. Frank (without). Woyh! whoh! Smiler!
1809. R. Kerr, Agric. Berw., 503. Formerly, in speaking to their horses, carters in calling to stop used the incommunicable sound of prroo, now wo, or woy.
1828. Carr, Craven Gloss., Who, Woy, a word used to stop horses in a team.