a small, solid piece of medicine

a sleeping tablet 一片安眠药

a vitamin tablet 一片维生素

a thin, flat, often square piece of hard material such as wood, stone, or metal

The poem was engraved on a tablet of stone. 这首诗刻在了一块石匾上。

UK a tablet of soap 一块肥皂

a small, flat computer that is controlled by touching the screen or by using a special pen