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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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