/ ˈjuːsɪdʒ; NAmE ; ˈjuːz-/ noun
1.
[ U , C ] the way in which words are used in a language :
current English usage
It's not a word in common usage .
2.
[ U ] the fact of sth being used; how much sth is used :
land usage
Car usage is predicted to increase.
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WORD ORIGIN
Middle English (in the sense customary practice ): from Old French , from us a use, from Latin usus , from uti to use.