Provide address given by old judge (5)
I believe the answer is:
orate
'provide address' is the definition.
(to orate is to give a speech)
'by old judge' is the wordplay.
'by' means one lot of letters go next to another.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'judge' becomes 'rate' (rating is a kind of judging).
'o'+'rate' is 'ORATE'.
'given' is the link.
(Other definitions for orate that I've seen before include "Harangue" , "Speak publicly" , "Spout" , "Give a formal address" , "Give speech" .)