Durchgang
alley
alleyway
conductive continuity
connecting passage
continuity
corridor
current passage
daylight
duct
gate opening area
gate opening
machining operation
opening area
operation
pass
passage aisle/corridor
passage aisle
passage opening
passage
passageway
penetration
procedure
round
run
sag
stage of tightening
thoroughfare
throat
through let
through pass
throughput
transference
transit
transmission
travel
traversal