Antlered beasts (4)
I believe the answer is:
elks
'antlered beasts' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for elks that I've seen before include "Large deer with flattened antlers" , "Large deer of Europe and N America" , "Large deer of Northern Europe" , "Moose(s)" , "Moose" .)