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.]
Dickens.
3.
A water demon.
Tylor.
© Webster 1913.