Bear Grylls ultimately too macho, chopping off tails (7)
I believe the answer is:
stomach
'bear' is the definition.
(both can mean to endure or tolerate)
'grylls ultimately too macho chopping off tails' is the wordplay.
I cannot quite see how this works, but
an anagram of 'macho' is 'omach' which is located in the answer.
The remaining letters 'st' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for stomach that I've seen before include "Breadbasket (informal)" , "Courage - guts" , "Corporation" , "Abdomen" , "Belly - tolerate!" .)