firstborn /ˈfɜː(ɹ)stˌbɔː(ɹ)n/adjective 2noun 1forms 1 adjective2 •Born as the first one in a family, flock or the like.Shaylene Marie Farrell was born on June 19, 1976, as the firstborn daughter of Darlene Farrell. — 2026 •Most excellent; most distinguished or exalted. noun1 •The first child to be born to a parent or family. formsfirstborns