int. Sport. A call to a pointer or setter to stop.
1825. Sporting Mag., XV. 348. It was no uncommon thing for him to call out To-ho, and sometimes, with increased emphasis, To-ho you devil, in his sleep.
1855. Stonehenge, Brit. Sports (ed. 4), 32. The breaker should walk up to [the dog] quietly, crying Toho! toho! toho!
1884. Speedy, Sport, 52. Hold up your hand and cry Toho.