Webster's English Dictionary

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canal

1. ca.nal \k*-'nal\ n [ME, fr. L canalis pipe, channel, fr. canna reed - 
   more at CAN]E 1: CHANNEL, WATERCOURSE  2: a tubular anatomical passage or 
   channel : DUCT  3: an artificial waterway for navigation or for draining or 
   irrigating land  4: any of various faint narrow markings on the planet Mars 
2. canal vt or ca.nalled or can.naled;  or ca.nal.ling;  or ca.nal.ing : to 
   construct a canal through or across