Definition of tray noun from the Oxford Advanced Learner's Dictionary

     

    tray

     noun
    noun
    BrE BrE//treɪ//
     
    ; NAmE NAmE//treɪ//
     
     
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  1. 1a flat piece of wood, metal or plastic with raised edges, used for carrying or holding things, especially food He brought her breakfast in bed on a tray. She came in with a tray of drinks. a tea tray
  2. 2(often in compounds) a shallow plastic box, used for various purposes a seed tray (= for planting seeds in) a cat’s litter tray see also baking tray, in tray, out tray
  3. Word Origin late Old English trīg, from the Germanic base of tree; the primary sense may have been ‘wooden container’.Extra examples Every hotel room has a colour TV, telephone and hospitality tray. He balanced the tray on his knees. a heavily laden tray waiters bearing trays of champagne
See the Oxford Advanced American Dictionary entry: tray