DUCT (_plural_ DUCTS)
* A pipe, tube or canal which carries gas or liquid from one place to another.
_heating and air-conditioning DUCTS_
* An enclosure or channel for electrical cable runs.
* (obsolete) Guidance; direction.
_[…] otherwise to express His care and love to mankind, viz., in giving and consigning to them His written word for a rule and constant director of life, not leaving them to the DUCT of their own inclinations._ — Henry Hammond.
* duct tape
* Mullerian ducts
* Wolffian ducts