epithelial duct

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Noun
1. a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance; "the tear duct was obstructed"; "the alimentary canal"; "poison is released through a channel in the snake's fangs"
(synonym) duct, canal, channel
(hypernym) passage, passageway
(hyponym) pore
(part-meronym) ampulla