Carbon I found in vessel, likewise gold, in hold (8)
I believe the answer is:
scissors
'hold' is the definition.
(I know that scissors is a type of wrestling hold)
'carbon i found in vessel likewise gold in' is the wordplay.
'carbon' becomes 'C' (C is the chemical symbol for carbon).
'found in' means one lot of letters goes inside another.
'vessel likewise' becomes 'ssss' (I can't justify this - if you can you should believe this answer much more).
'gold' becomes 'or' ('or' is the heraldic name for gold).
'in' means one lot of letters goes inside another.
'ssss' placed around 'or' is 'sssors'.
'c'+'i'='ci'
'ci' inserted inside 'sssors' is 'SCISSORS'.
(Other definitions for scissors that I've seen before include "Small shears" , "Paper/cloth cutters" , "Cross sis with two-bladed implement" , "Cutting device with two long blades" , "Tool with two crossed blades" .)