Synonyms and related words :
Eustachian tube, Fallopian tube, adit, aqueduct, canal, channel, conduit, course, ditch, egress, emunctory, entrance, exit, fistula, ingress, intestines, meatus, ostium, oviduct, passage, passageway, pore, salpinx, thoracic duct, trench, trough, troughing, troughway, tunnel, ureter, urethra, vagina, vas, vessel, watercourse, way,