pillbox

UK: /ˈpɪlbɒks/ US: /ˈpɪlˌbɑks/ ,(pil′boks′)

WordReference Random House Learner's Dictionary of American English © 2025

pill•box /ˈpɪlˌbɑks/   n. [countable]

1. Drugs a small box for holding pills.
2. a small, boxlike place for machine guns.

WordReference Random House Unabridged Dictionary of American English © 2025

pill•box  (pil′boks′), n. 

1. Drugs a box, usually shallow and often round, for holding pills.
2. a small, low structure of reinforced concrete, enclosing machine guns, and employed as a minor fortress in warfare.
3. Clothing a small, round, brimless hat with straight sides and a flat top, worn esp. by women.

• pill¹ + box¹ 1720–30

Collins Concise English Dictionary © HarperCollins Publishers::

pillbox / ˈpɪlˌbɒks/ noun

1. a box for pills
2. a small enclosed fortified emplacement, usually made of reinforced concrete
3. a small round hat, now worn esp by women