Definition of "duct" []

• An often enclosed passage or channel for conveying a substance, especially a liquid or gas. (noun)
• Anatomy A tubular bodily canal or passage, especially one for carrying a glandular secretion: a tear duct. (noun)
• A tube or pipe for enclosing electrical cables or wires. (noun)
• To channel through a duct: duct the moist air away. (verb-transitive)
• To supply with ducts. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The duct of the seminal vesicle joins the _vas deferens_ of the same side (both functionally and embryologically the seminal vesicle is no more than a diverticulum of the vas deferens); passing on under the name of the _common seminal_ or _ejaculatory duct_, the canal opens into the prostatic portion of the urethra (the orifices of the two common seminal ducts are in the folds of mucous membrane forming the right and left lateral margins of the _prostatic utricle_ or _uterus masculinus_)."
• "Or rulers with a rubber band ball wrapped in duct-tape and used as a crappy maces."
• "For example, recently the New York State Forensic Science Commission was asked to accredit a unit of a police lab in duct tape comparison."