int. Obs. rare. An exclamation used to urge on hounds. Cf. STABOY, STEEBOY, STUBOY.
1673. (title) Stoo him Bayes: Or some Observations upon the Humour of Writing Rehearsals Transprosd.
1692. Christ Exalted, § cv. 85. In bringing out his Molossi and whaffling Whelps, and crying, Stoo Dogs, stoo.