outer UK /ˈaʊtə/US /ˈaʊtɚ/adjective 2noun 10forms 4phrases 1 adjective2 •on the surface or edge of something, not inside it •Farther from the centre of the inside. noun10 •An outer part. •(UK) One who supports leaving the European Union.The 51.4 per cent to 48.6 per cent victory of the "outers" broke the back of the Labour government. — 2013 •The smallest single unit sold by wholesalers to retailers, usually one retail display box.We ordered two cartons with twelve outers in each. •The fourth circle on a target, outside the inner and magpie. •Someone who outs another. •Someone who admits to something publicly. •A shot which strikes the outer of a target. •An uncovered section of the seating at a stadium or sportsground. •One who puts out, ousts, or expels. •An ouster; dispossession. formsouters · outermore · outermost · outmost Phrases with outer down-and-outerSomeone who is down and out.