noun
An artificial waterway or artificially improved river used for travel, shipping, or irrigation.
(anatomy, botany) A tubular channel within the body or within a plant.
(astronomy) One of the faint, hazy markings resembling straight lines on early telescopic images of the surface of Mars; see Martian canals
verb
To dig an artificial waterway in or to (a place), especially for drainage
To travel along a canal by boat
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