Crossword Genius

Given a drink, so to speak, as from a can (7)

Ross

I believe the answer is:

watered

I'm a little stuck... Click here to teach me more about this clue!

'given a' is the definition.
I can't judge whether this defines the answer.

'drink so to speak as from a can' is the wordplay.
I cannot really see how this works, but
'drink' could be 'water' (water is an example) and 'water' is present in the answer.
'from' could be 'e' (I've seen this in other clues) and 'e' is present in the answer.
A single letter 'd' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in the Evening Standard.
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