canal

Noun

• long and narrow strip of water made for boats or for irrigation

• 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
    

• (astronomy) an indistinct surface feature of Mars once thought to be a system of channels; they are now believed to be an optical illusion

Verb

• provide (a city) with a canal

Related words

• Synonyms: 
  duct , epithelial duct , channel , canalize , canalise