Take sides, say (3)
I believe the answer is:
eat
'take sides say' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for eat that I've seen before include "Consume for tea" , "Worry" , "Bite, chew and swallow" , "Break bread" , "Do cats - bats? Do bats - cats? (Alice in Wonderland)" .)