outer meaning
EN
[-aʊtə(r)] 
US UK - NounPLoutersPREout-SUF-er
- An outer part.
- 'Phil Cornish' [a snowdrop variety] is like a cross between a pixie hat and a pagoda, with elegant upswept outers [outer petals] marked in a green colour-wash at the top and warpaint slashes at the lower end.
- The part of a target which is beyond the circles surrounding the bullseye.
- A shot which strikes the outer of a target.
- (wholesale trade) the smallest single unit normally sold to retailers, usually equal to one retail display box.
- We ordered two cartons with twelve outers in each.
- Someone who admits to something publicly.
- Someone who outs another.
- One who puts out, ousts, or expels.
- An ouster; dispossession.
- An outer part.
- AdjectiveCOMoutermoreSUPoutermost
- Outside; external.
- Farther from the centre of the inside.
- Nanny Broome was looking up at the outer wall. Just under the ceiling there were three lunette windows, heavily barred and blacked out in the normal way by centuries of grime. Their bases were on a level with the pavement outside, a narrow way which was several feet lower than the road behind the house.
- Outside; external.
- More Examples
- Used in the Middle of Sentence
- Unpolished grains that retained their outer coating were a major lynchpin of his 'whole foods'-based diet.
- Follow the urbexers as they navigate the inner and outer surfaces of our forbidden cities.
- An expression in macrogamonts or at the outer oocyst wall was not observed.
- Used in the Middle of Sentence
Definition of outer in English Dictionary
- Part-of-Speech Hierarchy
- Adjectives
- Morphemes
- Suffixes
- Words by suffix
- Words suffixed with -er
- Words suffixed with -er
- Words by suffix
- Suffixes
- Nouns
- Countable nouns
- Countable nouns
- Adjectives
Source: Wiktionary
Grammatically, this word "outer" is an adjective. It's also a morpheme, more specifically, a suffixe. It's also a noun, more specifically, a countable noun.