Buffalo (5)
'buffalo' is the definition.
(I know that buffalo can be written as Bison)
This is all the clue.
(Other definitions for bison that I've seen before include "North American buffalo" , "Shaggy-haired wild ox" , "Large shaggy wild ox" , "Ox-like ruminant" , "brute" .)
(Other definitions for wing that I've seen before include "Wound superficially; part of large house" , "Flying part" , "Group of squadrons; par of car" , "Take . . . . to fly away (4)" , "Stage area out of sight of the audience" .)
'buffalo' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for stymie that I've seen before include "'Hinder, obstruct (6)'" , "Impede, say golf stroke" , "Old putting problem" , "Thwart, foil" , "Thwart (as once was possible on the green)" .)