Meaning of “pill” - Learner’s Dictionary

pill

noun us uk /pɪl/

B1 [ C ] a small, hard piece of medicine that you swallow:

a vitamin pill
I've taken / a couple of pills, but my headache still hasn't gone.
the pill

a pill that prevents a woman from becoming pregnant

→ See also sleeping pill

(Definition of “pill” from the Cambridge Learner’s Dictionary © Cambridge University Press)