Source : Webster's Revised Unabridged Dictionary (1913)

   {On the wing}.
      (a) Supported by, or flying with, the wings another.

   {On the wings of the wind}, with the utmost velocity.

   {Under the wing}, or {wings}, {of}, under the care or
      protection of.

   {Wing and wing} (Naut.), with sails hauled out on either
      side; -- said of a schooner, or her sails, when going
      before the wind with the foresail on one side and the
      mainsail on the other; also said of a square-rigged vessel
      which has her studding sails set. Cf. {Goosewinged}.

   {Wing case} (Zo["o]l.), one of the anterior wings of beetles,
      and of some other insects, when thickened and used to
      protect the hind wings; an elytron; -- called also {wing
      cover}.

   {Wing covert} (Zo["o]l.), one of the small feathers covering
      the bases of the wing quills. See {Covert}, n., 2.

   {Wing gudgeon} (Mach.), an iron gudgeon for the end of a
      wooden axle, having thin, broad projections to prevent it
      from turning in the wood. See Illust. of {Gudgeon}.

   {Wing shell} (Zo["o]l.), wing case of an insect.

   {Wing stroke}, the stroke or sweep of a wing.

   {Wing transom} (Naut.), the uppermost transom of the stern;
      -- called also {main transom}. --J. Knowles.