† ˈprowous,a.Obs.rare. [f. prow n.2or a. + -ous.] Brave, valiant: = prow a. c1400tr.Secreta Secret., Gov. Lordsh. 91 He þat berys it with hym shal be prowous and hardy.1422Ibid., Priv. Priv. 176 By Speche of the Pepille, a coward may be as Prowos as Ector of troi.