Canal /(?)/

Ca·nal

Canal

n.
  1. An artificial channel filled with water and designed for navigation, or for irrigating land, etc.
  2. A tube or duct; as, the alimentary canal; the semicircular canals of the ear. (Anat.)
  3. A long and relatively narrow arm of the sea, approximately uniform in width; -- used chiefly in proper names; as, Portland Canal; Lynn Canal. [Alaska]

Phrases & Compounds
Canal boat
a boat for use on a canal; esp. one of peculiar shape, carrying freight, and drawn by horses walking on the towpath beside the canal.
Canal lock
See Lock.