Definition of paly:
(n) :
activity for amusement only, especially among the young; a
literary composition, intended to be represented by actors impersonating the characters and speaking the dialogue
"no wonder the fanbelt is slipping: there's too much play in it."
(v) :
to act in a manner such that one has
fun; to engage in activities expressly for the purpose of
recreation; to produce music using a musical instrument
"I've practiced the piano off and on, and I still can't play very well."