outerPronunciation: /ˈaʊtə/Translate outer | into French | into German | into Italian | into Spanish Definition of outer adjective [attributive] 1outside; external:the outer layer of the skin the outer door further from the centre or inside:the outer city bypass (especially in place names) more remote:Outer Mongolia 2objective or physical; not subjective. noun British 1an outer garment or part of one:boots with stiff leather outers 2(in archery and shooting) the division of a target furthest from the bullseye. a shot that strikes the outer. 3a container in which packaged objects are placed for transport or display. 4Australian informal the part of a racecourse outside the enclosure. Origin: late Middle English: from out + -er2, replacing earlier utter1outer in other Oxford dictionaries Definition of outer in the US English dictionary