The Collaborative International Dictionary of English v.0.48:

Tray \Tray\, v. t. [OF. tra["i]r, F. trahir, L. tradere. See
   Traitor.]
   To betray; to deceive. [Obs.] --Chaucer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Tray \Tray\, n.; pl. Trays. [OE. treye, AS. treg. Cf.
   Trough.]
   1. A small trough or wooden vessel, sometimes scooped out of
      a block of wood, for various domestic uses, as in making
      bread, chopping meat, etc.
      [1913 Webster]

   2. A flat, broad vessel on which dishes, glasses, etc., are
      carried; a waiter; a salver.
      [1913 Webster]

   3. A shallow box, generally without a top, often used within
      a chest, trunk, box, etc., as a removable receptacle for
      small or light articles.
      [1913 Webster]

WordNet (r) 3.0 (2006):

tray
    n 1: an open receptacle for holding or displaying or serving
         articles or food