Source : Webster's Revised Unabridged Dictionary (1913)

Elusion \E*lu"sion\, n. [LL. elusio, fr. L. eludere, elusum. See
   {Elude}.]
   Act of eluding; adroit escape, as by artifice; a mockery; a
   cheat; trickery.

Source : WordNet®

elusion
     n : the act of avoiding capture (especially by cunning) [syn: {slip},
          {eluding}]