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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

object, physical object go
a tangible and visible entity

whole, unit go
an assemblage of parts that is regarded as a single entity

artifact, artefact go
a man-made object taken as a whole

way go
any artifact consisting of a road or path affording passage from one place to another

passage go
a way through or along which someone or something may pass

conduit go
a passage (a pipe or tunnel) through which water or electric wires can pass

duct go
an enclosed conduit for a fluid

airway, air passage, air duct
a duct that provides ventilation (as in mines)

noun.artifact

4 Subcategories

register go
an air passage (usually in the floor or a wall of a room) for admitting or excluding heated air from the room
snorkel, schnorkel, schnorchel, snorkel breather, breather go
air passage provided by a retractable device containing intake and exhaust pipes
upcast go
air passage consisting of a ventilation shaft through which air leaves a mine
ventilation shaft go
a shaft in a building