baby fat noun2 •The natural fat on the body of a child or young animal that normally disappears at adolescence.Baby beef is the term applied to young (15 months or under) very fat and light beeves that have been on full feed practically from birth, never having been allowed to lose their baby fat. — 1922 •Bodyfat gained during pregnancy.While some new mothers can dismiss baby fat as a rite of passage, entertainers are expected to bounce back to their former thin, glamorous selves at lightning speed. — 2003
