Source : Webster's Revised Unabridged Dictionary (1913)

Impurple \Im*pur"ple\, v. t. [imp. & p. p. {Impurpled}; p. pr. &
   vb. n. {Impurpling}.] [Pref. im- in + purple. Cf.
   {Empurple}.]
   To color or tinge with purple; to make red or reddish; to
   purple; as, a field impurpled with blood.

         Impurpled with celestial roses, smiled.  --Milton.

         The silken fleece impurpled for the loom. --Pope.