ca·nal /kəˈnæl/ 名詞
1. An artificial channel filled with water and designed for navigation, or for irrigating land, etc.
2. Anat. A tube or duct; as, the alimentary canal; the semicircular canals of the ear.
3. A long and relatively narrow arm of the sea, approximately uniform in width; -- used chiefly in proper names; as, Portland Canal; Lynn Canal. [Alaska]
Canal boat, a boat for use on a canal; esp. one of peculiar shape, carrying freight, and drawn by horses walking on the towpath beside the canal.
Canal lock. See Lock.
n 1: (astronomy) an indistinct surface feature of Mars once
thought to be a system of channels; they are now
believed to be an optical illusion
2: a bodily passage or tube lined with epithelial cells and
conveying a secretion or other substance; "the tear duct
was obstructed"; "the alimentary canal"; "poison is
released through a channel in the snake's fangs" [syn: duct,
epithelial duct, channel]
3: long and narrow strip of water made for boats or for
v : provide (a city) with a canal [syn: canalize, canalise]
[also: canalling, canalled]