Crossword Genius

Melt old penny I found with small crack (8)

Ross

I believe the answer is:

dissolve

'melt' is the definition.
(I know that melt can be written as dissolve)

'old penny i found with small crack' is the wordplay.
'old penny' becomes 'd'.
'found with' means one lot of letters go next to another.
'small' becomes 's' (abbreviation - e.g. clothes size).
'crack' becomes 'solve' (crack can mean to solve or decipher).
'd'+'i'+'s'+'solve'='DISSOLVE'

(Other definitions for dissolve that I've seen before include "Annul (a marriage, etc)" , "Liquify, melt" , "Pass into a solution" , "Finish" , "Change into liquid" .)

I've seen this clue in The Telegraph.
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