Knife shown by drunk turning up in fight (8)
I believe the answer is:
stiletto
'knife' is the definition.
(stiletto is a kind of knife)
'by drunk turning up in fight' is the wordplay.
'by drunk' becomes 'lit' (slang term. I am not sure about the 'by' bit.).
'turning up' says the letters should be written backwards.
'in' indicates putting letters inside.
'fight' becomes 'setto' (set-to can mean a fight or argument).
'lit' backwards is 'til'.
'til' inserted into 'setto' is 'STILETTO'.
'shown' is the link.
Can you help me to learn more?
(Other definitions for stiletto that I've seen before include "Dagger with narrow blade, or a high heel" , "Thin blade" , "One may have a stab" , "Bedspread" , "Sort of knife" .)