[ca.nal] n [ME, fr. L canalis pipe, channel, fr. canna reed--more at cane] (15c) 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
[2]canal vt -nalled or -naled ; -nal.ling or -nal.ing (1819): to construct a canal through or across