This meaning refers to a flat object with raised edges used for serving or transporting items.
She carried the drinks on a tray.
The waiter placed the tray on the table.
This meaning refers to a shallow container built into furniture, equipment, or storage systems.
Put the papers in the document tray.
The printer has two paper trays.
Core substantive noun used across general discourse and written English.
A detailed understanding of tray is essential for this field of study.
They examined the role of tray within the wider community.