I. ˈbōth pronoun, plural in construction
Etymology: Middle English bothe, probably from Old Norse bāthir; akin to Old High German beide both
Date: 12th century
: the one as well as the other
both of us
we are both well
$1000 fine or 30 days in jail, or both
II. conjunction
Date: 12th century
— 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
III. adjective
Date: 13th century
: being the two : affecting or involving the one and the other
both feet
both his eyes
both these armies