The Collaborative International Dictionary of English v.0.48:

Plaything \Play"thing`\, n.
   A thing to play with; a toy; anything that serves to amuse.
   [1913 Webster]

         A child knows his nurse, and by degrees the playthings
         of a little more advanced age.           --Locke.
   [1913 Webster]

WordNet (r) 3.0 (2006):

plaything
    n 1: an artifact designed to be played with [syn: plaything,
         toy]