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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 alimentary canal";
   - duct, epithelial duct, channel
    
3. Long and narrow strip of water made for boats or for irrigation

1. Provide (a city) with a canal
   - canalize, canalise [Brit]

Derived forms: canalling, canals, canalled

Type of: channel, furnish, offer, passage, passageway, provide, render, supply, watercourse, waterway

Encyclopedia: Canal, Ontario