canal

American  

[kuh-nal] / kəˈnæl /

noun

1. an artificial waterway for navigation, irrigation, etc.

2. a long narrow arm of the sea penetrating far inland.

3. a tubular passage or cavity for food, air, etc., especially in an animal or plant; a duct.

4. channel; watercourse.

5. Astronomy. one of the long, narrow, dark lines on the surface of the planet Mars, as seen telescopically from the earth.

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verb (used with object)

canalled, canaled, canalling, canaling

1. to make a canal through.

canal British  

/ kəˈnæl /

noun

1. an artificial waterway constructed for navigation, irrigation, water power, etc

2. any of various tubular passages or ducts

   the alimentary canal

3. any of various elongated intercellular spaces in plants

4. astronomy any of the indistinct surface features of Mars originally thought to be a network of channels but not seen on close-range photographs. They are caused by an optical illusion in which faint geological features appear to have a geometric structure

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verb

1. to dig a canal through

2. to provide with a canal or canals

Etymology

Origin of canal

First recorded in 1400–50; late Middle English: “waterpipe, tubular passage,” from Latin canālis, perhaps equivalent to can(na) “reed, pipe” ( cane ) + -ālis -al ¹; canal def. 5 a mistranslation of Italian canali “channels,” the term used by G. V. Schiaparelli

Explanation

A canal is a long, man-made strip of water used for irrigation or boat access to a bigger body of water, like the famous Erie Canal, which connects the Hudson River to Lake Erie. Canal is related to the word channel, and all its different shades of meaning have to do with tunnel shaped spaces that carry liquid from one place to another. Besides man-made irrigation canals, canals that connect boat docks to rivers and oceans, or street-like canals in boat cities like Amsterdam, there are canals in your body, like your nasal canal, or the birth canal you came out of. It's also a verb meaning "to dig a canal."

Example Sentences

“One car survey showed customers would rather have a root canal than negotiate a car at a dealership,” said Jesse Toprak, a former automotive analyst who now runs OptiCar.AI, an online marketplace for cars.

From The Wall Street Journal • Apr. 13, 2026

The Strait of Hormuz is a natural passage, not a man-made canal running through sovereign territory.

From The Wall Street Journal • Apr. 3, 2026

It was created by a break in a canal carrying water from the Colorado River in the early 1900s.

From Los Angeles Times • Apr. 3, 2026

Researchers followed participants for two years after their root canal procedures.

From Science Daily • Mar. 15, 2026

But they were carried down a canal, passersby turning to stare as they were borne through the water.

From "Impossible Creatures" by Katherine Rundell