canal - noun

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

a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance

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

canal - verb

• provide (a city) with a canal

canal - thesaurus

canalise   canalize   channel   duct