I lacto lactarlactar v. tr. Give suck to their young. amamantar.lactar tr. Amamantar.Criar [to the children or puppies] with leche.intr. Nurture with leche.lactar ( lak taþ ) 39: verb transitivoalimentar a mammal with milk to her calf she-Wolf lacta to their crias.lactar: verb intransitivotomar milk sucking