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

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

That can mean someone needing two crowns, root canal work and three filings, for example, would generate the same number of points as someone needing just a single crown.

From BBC • Mar. 24, 2026

The researchers found several encouraging changes in patients after successful root canal treatment.

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

A combination of pus and saliva leaked from the gland back into Garfield's mouth and ear canal.

From "Ambushed!" by Gail Jarrow