Source : Webster's Revised Unabridged Dictionary (1913)

Whinny \Whin"ny\, v. i. [imp. & p. p. {Whinnied}; p. pr. & vb.
   n. {Whinnying}.] [From {Whine}]
   To utter the ordinary call or cry of a horse; to neigh.

Whinny \Whin"ny\, n.; pl. {Whinnies}.
   The ordinary cry or call of a horse; a neigh. ``The stately
   horse . . . stooped with a low whinny.'' --Tennyson.

Whinny \Whin"ny\, a.
   Abounding in whin, gorse, or furze.

         A fine, large, whinny, . . . unimproved common.
                                                  --Sterne.

Source : WordNet®

whinny
     n : the characteristic sounds made by a horse [syn: {neigh}, {nicker},
          {whicker}]
     v : characteristic of horses [syn: {neigh}, {nicker}, {whicker}]
     [also: {whinnied}]