The Collaborative International Dictionary of English v.0.48:

Pley \Pley\, v. & n.
   See Play. [Obs.] --Chaucer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pley \Pley\, a.
   Full See Plein. [Obs.] --Chaucer.
   [1913 Webster]