n.
Pronunciation: k ə - ' nal
Function: noun
Etymology: Middle English, from Latin canalis pipe, channel, from canna reed ― more at CANE
Date: 15th century
1 : a tubular anatomical passage or channel : DUCT
2 : CHANNEL , WATERCOURSE
3 : an artificial waterway for navigation or for draining or irrigating land
4 : any of various faint narrow lines on the planet Mars seen through telescopes and once thought by some to be canals built by Martians