Webster’s Revised Unabridged Dictionary · 1913
Coeval
Co·e′val, a. [L. coaevus; co- + aevum lifetime, age. See Age, n.] Of the same age; existing during the same period of time, especially time long and remote; — usually followed by with.
Silence! coeval with eternity! Pope.
Oaks coeval spread a mournful shade. Cowper.
Co·e′val, n. One of the same age; a contemporary.
As if it were not enough to have outdone all your coevals in wit. Pope.