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“passageway”
A unit related to:
“passageway”
(Greek > Latin > Old French: passageway, used primarily as "a pore, a small orifice"; opening; cavity, tract)
(Latin: opening or passageway in the body, bodily opening or canal; or to go, to pass; a passage)
(Latin: a doorlike structure in a passageway that hinders or prevents the reflux or flowing back of its contents)