Birth/bɜːrθ/ Definition 1 of 3Pro Tip 1/3Natural Process Refers to the physical event of bringing a child into the world. The doctor assisted with the birth of their first child. Pro Tip 2/3Life-changing Event A significant occurrence that alters one's life, often celebrated or documented. Her birth was celebrated by the whole family. Pro Tip 3/3Personal Details Often used in documentation to identify an individual. Please provide your date of birth on the form.