The Collaborative International Dictionary of English v.0.48:

out-tray \out-tray\ n.
   a wood or metal receptacle placed on a desk to hold documents
   which have been processed, prior to transfer to a different
   person.

   Syn: out-basket.
        [WordNet 1.5 +PJC]

WordNet (r) 3.0 (2006):

out-tray
    n 1: a wood or metal receptacle placed on your desk to hold your
         outgoing material [syn: out-basket, out-tray] [ant:
         in-basket, in-tray]