Definition of both
(Entry 1 of 3)
: the one as well as the other
both of us
both
conjunctionDefinition of both (Entry 2 of 3)
—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 utilityhe … who loveth well both man and bird and beast— S. T. Coleridge
both
adjectiveDefinition of both (Entry 3 of 3)
: being the two : affecting or involving the one and the other
both feet both his eyes both these armies
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Merriam-Webster unabridged
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Time Traveler for both
The first known use of both was before the 12th century
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