Meaning of “both” - Learner’s Dictionary

both

pronoun, determiner, quantifier us uk /bəʊθ/

A1 used to talk about two people or things:

The children both have red hair.
Both her parents are dead.
Both of my sisters are teachers.
Would you like cream, ice cream, or both?

More examples

both...and...

used to emphasize that you are talking about two people or things:

Both Jack and his wife are keen chess players.
→ See also have the best of both worlds

(Definition of “both” from the Cambridge Learner’s Dictionary © Cambridge University Press)