I escape buccaneer's blabber (5)
I believe the answer is:
prate
'blabber' is the definition.
(I know that blabber can be written as prate)
'i escape buccaneer's' is the wordplay.
'escape' is a deletion indicator.
'buccaneer' becomes 'pirate' (a buccaneer is a pirate).
'pirate' with 'i' taken away is 'PRATE'.
(Other definitions for prate that I've seen before include "Rabbit on" , "Tattle, chatter" , "Talk too much" , "Talk foolishly - blab" , "Talk long and foolishly" .)