A bad leak makes more than a puddle (4)

I believe the answer is:

lake

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

'a puddle' is the definition.
(thesaurus)

'a bad leak' is the wordplay.
'a bad' indicates anagramming the letters.
'leak' anagrammed gives 'LAKE'.

'makes more than' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for lake that I've seen before include "Erie or Woebegone" , "Visible representation" , "Pool" , "Excess of wine?" , "E.g. Huron" .)

I've seen this clue in the Evening Standard.

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