water boy

a person who carries a canteen or bucket of drinking water to those too occupied to fetch it, as to soldiers, laborers, or football players.

a person who sees that livestock is supplied with water, as by filling water troughs.

Origin of water boy

First recorded in 1630–40

You brought my water-boy back with you last night, didn't you, Mr. Ballard?

The King of Arcadia |Francis Lynde
From boss to water-boy we were failures all; so we understood each other.

The Precipice |Elia Wilkinson Peattie
The water-boy was humped over the horn of his saddle as if he had found a stomach-ache in the breathless gallop.

The King of Arcadia |Francis Lynde
I'll help pass a law making it illegal for Hans Wagner to hang around a ball park except as water-boy.

At Good Old Siwash |George Fitch

On his plantation Henson served as water-boy, butler and finally as a field hand, experiencing the usual hardship of the slave.

The Journal of Negro History, Volume 3, 1918 |Various