duct

3 definitions • 4 examples

a tube or pipe that carries liquid or air, especially in and out of buildings or through the body:

A draft came in through the ventilation ducts.

The milk ducts in the breast can sometimes become blocked.

a tube or pipe in a building that carries liquid or air or protects wires:

Air conditioning requires ventilating ducts.

A duct is also a narrow tube in the body that carries a liquid:

tear ducts