Simple Definition of duct

from our Learner's Dictionary

duct

noun

plural ducts
1
: a pipe or tube for air, water, electric power lines, etc., to pass through
a building's air/heating/ventilation ducts
2
: a tube in the body that carries a particular liquid
tear ducts
the bile duct

Cite this Entry

“Duct.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/duct. Accessed 14 Apr. 2026.

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