ou /ˈəʊ.uː/noun 1/oʊ/ noun 1forms 2 noun1 •A probably extinct species of Hawaiian honeycreeper, Psittirostra psittacea. ou UK /əʊ/US /oʊ/ noun1 •(South-Africa, informal) A fellow, guy, bloke.Ag pleez Deddy won't you take us to the wrestling We wanna see an ou called Sky High Lee — 1962 formsouens · ous