Meaning & Definition of Canal in English

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"

3. Long and narrow strip of water made for boats or for irrigation

1. Provide (a city) with a canal