βρᾰχύ-πορος · brachy-poros — LSJ
with a short orbit, of a cycle of births, Pl. R. 546a; οἱ β. ὄρνιθες of short flight, Philostr. VA 3.48: Comp., completing an orbit in shorter time, Procl. Hyp. 1.24.
with narrow passage, εἴσπλους Plu. Mar. 15 (dub.l.).