1
- historical a wooden plate or platter for food〈史〉（盛食物的）木盘（大浅盘）。
1.1
- a thick slice of bread used as a plate or platter（当盘子用的）厚面包片。
2
- old-fashioned term for MORTAR BOARD (in sense 1).〈旧〉同MORTAR BOARD （义项1）。
词源
Middle English: from Anglo-Norman French trenchour, from Old French trenchier 'to cut' （see TRENCH）.