Source : Webster's Revised Unabridged Dictionary (1913)

Wimple \Wim"ple\, n. [OE. wimpel, AS. winpel; akin to D. & G.
   wimpel a pennant, streamer, OHG. wimpal a veil, Icel.
   vimpill, Dan. & Sw. vimpel a pennant, streamer; of uncertain
   origin. Cf. {Gimp}.]
   1. A covering of silk, linen, or other material, for the neck
      and chin, formerly worn by women as an outdoor protection,
      and still retained in the dress of nuns.

            Full seemly her wympel ipinched is.   --Chaucer.

            For she had laid her mournful stole aside, And
            widowlike sad wimple thrown away.     --Spenser.

            Then Vivian rose, And from her brown-locked head the
            wimple throws.                        --M. Arnold.

   2. A flag or streamer. --Weale.

Wimple \Wim"ple\, v. t. [imp. & p. p. {Wimpled}; p. pr. & vb. n.
   {Wimpling}.]
   1. To clothe with a wimple; to cover, as with a veil; hence,
      to hoodwink. ``She sat ywympled well.'' --Chaucer.

            This wimpled, whining, purblind, wayward boy.
                                                  --Shak.

   2. To draw down, as a veil; to lay in folds or plaits, as a
      veil.

   3. To cause to appear as if laid in folds or plaits; to cause
      to ripple or undulate; as, the wind wimples the surface of
      water.

Wimple \Wim"ple\, v. i.
   To lie in folds; also, to appear as if laid in folds or
   plaits; to ripple; to undulate. ``Wimpling waves.''
   --Longfellow.

         For with a veil, that wimpled everywhere, Her head and
         face was hid.                            --Spenser.

         With me through . . . meadows stray, Where wimpling
         waters make their way.                   --Ramsay.

Source : WordNet®

wimple
     n : headdress of cloth; worn over the head and around the neck
         and ears by medieval women