I've heard 'water' used, to mean 'give water to drink'. With animals, it's the normal word: when you 'water a horse' nobody thinks you take a hose and spray it (as you do when you 'water a garden' ). But it's sometimes informally used of people, sometimes with the implication of an arduous routine: 'I'm dreading Christmas: I'll have 14 people to feed and water'.
Archaically, there was the phrasal verb 'give to drink' (which didn't need an object): 'When he arrived, they gave him to drink'. But this hasn't been used in Real Life for many years - though it's still used in historical quotes (e.g. from the King James Bible - sorry to keep going on about this, but it's an immensely important influence on the development of the language )
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