сверстник znamená v Angličtina

age-mate▼(one who is the same age as another)
noun

coeval [coevals]▼(somebody of the same age)
noun
[UK: ˌkəʊ.ˈiːv.l̩] [US: ˌkoʊ.ˈiːv.l̩]

peer [peers]▼(someone or something of equal level)
noun
[UK: pɪə(r)] [US: ˈpɪr]