noun
An organ or instrument of flight
appendage, pinion, elytron, aileron, airfoil; see also feather.
An architectural unit or extension
annex, ell, addition, projection, hall, section, division, part.
An organized group of aircraft
flying unit, flight, flying squad, formation, air squadron; see also unit 1.
Outer portions of a line in sports or war
right wing, left wing, end of the line, end, extension, flank, side, segment.
Entrance to the stage: usually plural
offstage, backstage, behind-stage, back, flats, green room.
*A pitching arm
soup bone*, glass arm*, heave machinery*; see arm 2.
on the wing
take wing
take under one's wing