Refuse a beggar wanting change (7)

I believe the answer is:

garbage

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'refuse' is the definition.
(synonyms)

'a beggar wanting change' is the wordplay.
'a beggar' anagrams to 'GARBAGE'.
But, I'm unsure how this is indicated.

Can you help me to learn more?

(Other definitions for garbage that I've seen before include "'Refuse, rubbish (7)'" , "Rubbish, waste" , "Food waste or trash" , "Nonsense!" , "Brag about age? - that's rubbish" .)

I've seen this clue in The Sun.

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