Por·tass n. A breviary; a prayer book. [Written variously portace, portasse, portesse, portise, porthose, portos, portus, portuse, etc.] [Obs.] By God and by this porthors I you swear. --Chaucer. ◄ ►
Por·tos n. See Portass. [Obs.] ◄ ►