mooey in English dictionary mooey Meanings and definitions of "mooey" (UK, slang) The mouth; the face. (UK, slang) The vagina or vulva. adjective (slang) "Moo"-like; reminiscent of a cow. noun (Britain, slang) The mouth; the face. noun (Britain, slang) The vagina or vulva. more Grammar and declension of mooey mooey ( plural mooeys) mooey (plural mooeys) more Sample sentences with "mooey" Declension Stem Try again Authors