1. [C] a small solid piece of medicine that you swallow whole
»He has to take pills to control his blood pressure.
»a bottle of vitamin pills
2. the Pill / the pill, a pill taken regularly by some women in order to prevent them having babies
»on the Pill
»My doctor advised me to go on the pill (=start taking it regularly).
3. sugar / sweeten the pill, to do something to make an unpleasant job or situation less unpleasant for the person who has to accept it
You won't see him sugar-coat the truth. 你不会看到他美化事实的。
Take a chill pill.