Merriam-Webster Online Dictionary
both (pronoun, plural in construction)the one as well as the other - both of us
- used as a function word to indicate and stress the inclusion of each of two or more things specified by coordinated words, phrases, or clauses prized both for its beauty and for its utility he … who loveth well both man and bird and beast S. T. Coleridge
being the two affecting or involving the one and the other - both feet both his eyes both these armies
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