Meaning & Definition of Duct in English

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"

2. A continuous tube formed by a row of elongated cells lacking intervening end walls

3. An enclosed conduit for a fluid