Snake found in disco, braggart said! (5)
I believe the answer is:
cobra
'snake' is the definition.
(I know that cobra is a type of elapid)
'in disco braggart said' is the wordplay.
'in' indicates a hidden word.
'COBRA' can be found hidden inside 'disco braggart said'.
'found' is the link.
(Other definitions for cobra that I've seen before include "one leading charmed life?" , "Highly venomous hooded reptile" , "Venomous snake, may be king" , "Hooded ophidian" , "Venomous Asiatic and African elapid snake" .)