duct

definition: an enclosed conduit for a fluid
example:
speech part: noun
synonyms:
definition: a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance
example: the tear duct was obstructed
speech part: noun
synonyms: channel
definition: a continuous tube formed by a row of elongated cells lacking intervening end walls
example:
speech part: noun
synonyms:
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