Tatu is a feminine given name of Swahili origin, meaning "third (child)".In many African cultures, counting names are common. They help express the order of birth of a child. The name shows how important family structure is. Swahili, a Bantu language, uses similar naming patterns. Other examples are Pili ("second") or Nane ("eighth"). These names are sometimes given based on the order or the day of birth.Meaning: Third (child)Origin: SwahiliType: Birth-order nameGender: FeminineUsage: East Africa (especially Tanzania, Kenya)