Ben Gough guillotined plenty (6)
I believe the answer is:
enough
'plenty' is the definition.
(I know that plenty can be written as enough)
'ben gough guillotined' is the wordplay.
'ben' becomes 'en' (I can't explain this - if you can you should give a lot more credence to this answer).
'guillotined' means to remove the first letter.
'gough' with its initial letter taken off is 'ough'.
'en'+'ough'='ENOUGH'
Can you help me to learn more?
(Other definitions for enough that I've seen before include "Satisfactory quantity" , "Ample, sufficient" , "As much as required" , "Sufficient to answer demand" , "Stop right now!" .)