Synonyms and related words :
access, adit, admission, admittance, air lock, approach, channel, come in, conduit, corridor, course, ditch, duct, egress, entrance, entranceway, entree, entry, entryway, exit, gangplank, gangway, go in, hall, in, ingression, inlet, intake, means of access, opening, passage, passageway, penetrate, trench, trough, troughing, troughway, tunnel, vestibule, way, way in