portass Meaning, Definition & Usage

  1. noun an aperture or hole that opens into a bodily cavity
    orifice; porta; opening.
    • the orifice into the aorta from the lower left chamber of the heart

WordNet

Por"tass noun
Etymology
OF. porte-hors a kind of prayer book, so called from being portable; cf. LL. portiforium.
Definitions
  1. A breviary; a prayer book. Written variously portace, portasse, portesse, portise, porthose, portos, portus, portuse, etc. Obs. Spenser. Camden.
    By God and by this porthors I you swear. Chaucer.

Webster 1913