Below are possible answers for the crossword clue Heating pipe.
4 letter answer(s) to heating pipe
DUCT
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"
a continuous tube formed by a row of elongated cells lacking intervening end walls
an enclosed conduit for a fluid
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