Twins follower (4)
I believe the answer is:
crab
'twins follower' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for crab that I've seen before include "Ten-legged shellfish" , "A crustacean; type of apple" , "Stalk-eyed crustacean" , "One may be caught" , "winch" .)