Born/bɔːrn/ Definition 1 of 4Pro Tip 1/2Specific Dates Use 'born on' with specific dates and 'born in' with years or places. He was born on March 5. Pro Tip 2/2Premature Birth 'Born' doesn't imply timing, so specify if the birth was early, like 'prematurely born'. The child was prematurely born at seven months.