Tolerate animal (4)
I believe the answer is:
bear
I believe this is a double definition.
'tolerate' is the first definition.
(synonyms)
'animal' is the second definition.
(I know that Bear is a human)
(Other definitions for bear that I've seen before include "Tolerate; animal" , "Press (on) - approach threateningly" , "Carry; large animal" , "See 13 across" , "Support, large mammal" .)