Football position (4)
'football position' is the definition.
(I know that midfielder is a football position)
This is all the clue.
(Another definition for midfielder that I've seen is " Central football player".)
(Other definitions for wing that I've seen before include "Limb - faction" , "Wound superficially; part of large house" , "Part of flier" , "Plovery flock" , "Faction; annexe" .)