rein rein [rein] n 1 rédea. 2fig freio, controle, refreamento. vt+vi 1 levar as rédeas. 2fig governar, controlar.Expressõesto draw rein apertar as rédeas, deter o passo. to give rein to dar rédeas a, largar as rédeas. to keep a rein on controlar. to rein in reter, refrear. to rein up / back fazer parar o cavalo. to take the reins assumir o controle.