End piece (4)
(Other definitions for stub that I've seen before include "Extinguish the cigarette on a counterfoil" , "what smoker drops in street?" , "Tooth remnant" , "Counterfoil, of a cheque say" , "Truncated remnant" .)
'end piece' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for coda that I've seen before include "Musical recap" , "last piece of work" , "bit at the end" , "tail" , "Word that modifies" .)