Browning, say, coming back to acquire a bit of gold (6)
I believe the answer is:
nugget
'a bit of gold' is the definition.
(I've seen this before)
'browning say coming back to acquire' is the wordplay.
'browning say' becomes 'gun' (I can't justify this - if you can you should believe this answer much more).
'coming back' is a reversal indicator.
'to acquire' becomes 'get' ('get' can be a synonym of 'acquire').
'gun' in reverse letter order is 'nug'.
'nug'+'get'='NUGGET'
Can you help me to learn more?
(Other definitions for nugget that I've seen before include "Piece of precious metal (or chicken?)" , "Valuable little piece" , "valuable fragment" , "Lump of metal, say gold" , "(Small) lump (of value)" .)