One that may charge money (5)

I believe the answer is:

rhino

'money' is the definition.
(I've seen this before)

I don't understand the rest of the clue.

(Other definitions for rhino that I've seen before include "Stumpy" , "Funds" , "one still charges in Africa" , "one may charge unwary tourist?" , "Dosh (slang)" .)

I've seen this clue in The Independent.

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