Suggestion from union freshly filled with purpose (8)
I believe the answer is:
innuendo
'suggestion' is the definition.
(I've seen this before)
'union freshly filled with purpose' is the wordplay.
'freshly' indicates anagramming the letters.
'filled with' is an insertion indicator.
'purpose' becomes 'end' (both can mean a goal).
'union' with letters rearranged gives 'innuo'.
'innuo' enclosing 'end' is 'INNUENDO'.
'from' acts as a link.
(Other definitions for innuendo that I've seen before include "comment of sexual nature?" , "Indirect remark" , "Suggestiveness" , "Insinuation - suggestion" , "Disparaging oblique remark" .)