1a flat piece of wood, metal or plastic with raised edges, used for carrying or holding things, especially foodHe brought her breakfast in bed on a tray.She came in with a tray of drinks.a tea tray2(often in compounds) a shallow plastic box, used for various purposesa seed tray (= for planting seeds in)a cat's litter tray see also baking tray, in tray, out tray
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treɪ