The Collaborative International Dictionary of English v.0.48:

Fillip \Fil"lip\ (f[i^]l"l[i^]p), v. t. [imp. & p. p.
   Filliped; p. pr. & vb. n. Filliping.] [For filp, flip.
   Cf. Flippant.]
   1. To strike with the nail of the finger, first placed
      against the ball of the thumb, and forced from that
      position with a sudden spring; to snap with the finger.
      "You fillip me o' the head." --Shak.
      [1913 Webster]

   2. To snap; to project quickly.
      [1913 Webster]

            The use of the elastic switch to fillip small
            missiles with.                        --Tylor.
      [1913 Webster]