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Dictionary definition for: Canal
1. (n) (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. (v) provide (a city) with a canal
3. (n) 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"
4. (n) long and narrow strip of water made for boats or for irrigation
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