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

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

HPV causes cells in the anal canal to grow abnormally and form tumours.

From BBC • Mar. 18, 2026

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

From Science Daily • Mar. 15, 2026

Unlike cargo moving from the Atlantic Basin or the Middle East, Alaska LNG doesn’t transit through the Panama Canal and thus doesn’t face canal congestion, water-level restrictions or geopolitical turmoil during passage.

From The Wall Street Journal • Mar. 13, 2026

They represented shopkeepers, street sweepers, a factory owner, a canal bargeman—all people who had realized during Father’s illness what he meant to them.

From "The Hiding Place" by Corrie ten Boom