- any tube, canal, pipe, or conduit by which a fluid, air, or other substance is conducted or conveyed.
- a tube, canal, or vessel conveying a body fluid, especially a glandular secretion or excretion.
- a cavity or vessel formed by elongated cells or by many cells.
- a single enclosed runway for conductors or cables.
- (in a press) the reservoir for ink.
- to convey or channel by means of a duct or ducts: Heat from the oven is ducted to the outside.
- a tube, pipe, or canal by means of which a substance, esp a fluid or gas, is conveyed
- any bodily passage, esp one conveying secretions or excretions
- a narrow tubular cavity in plants, often containing resin or some other substance
- a channel or pipe carrying electric cable or wires
- a passage through which air can flow, as in air conditioning
- the ink reservoir in a printing press
