wa·ter·man /ˈwɔtɚ/
  劃手
  Wa·ter·man, n.; pl. Watermen
  1. A man who plies for hire on rivers, lakes, or canals, or in harbors, in distinction from a seaman who is engaged on the high seas; a man who manages fresh-water craft; a boatman; a ferryman.
  2. An attendant on cab stands, etc., who supplies water to the horses.  [Eng.]
  3. A water demon.
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  waterman
       n : someone who drives or rides in a boat [syn: boatman, boater]