birth certificate noun1 •An official document certifying the details of an individual's birth, indicating the name, date, and parents' names, and details such as parents' occupation and religion.[T]he pleasure of writing on wax with a stylus is exemplified by the fine, flowing hand of a Roman scribe who made out the birth certificate of Herennia Gemella, born March 128 AD. — 2013 formsbirth certificates · birth-certificates