fashionfash·ion1 /ˈfæʃən/ noun1[countableC, uncountableU] a way of doing something or behaving that is popular at a particular timefashion forHow do you explain the current fashion for takeovers?
Good design will never go out of fashion (=become unfashionable).
Big companies seem to be in fashion (=acceptable and popular) again.
2MANUFACTURING [uncountableU] the business of making and selling clothes, shoes etc in new and changing stylesEmma wants to work in the fashion industry.
leading fashion designers
3[countableC, uncountableU] a style of clothes or hair that is popular at a particular timeWe sell only the latest fashions.
Long skirts are back in fashion. (=are in fashion again after a period of time when they were not)