Tusked mammal (6)
'tusked mammal' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for walrus that I've seen before include "Tusked sea mammal" , "Tusked marine animal" , "Marine mammal with two long tusks" , "'The time has come', the . . . said" , "Kind of heavy moustache that hangs down at sides" .)
'tusked mammal' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for elephant that I've seen before include "Trumpeter" , "The animal that never forgets" , "bigger one from two continents?" , "Source of ivory" , "Large pachyderm" .)