pillbox

noun3

1. •
   A small box in which pills are kept.

   • There is a list of possessions auctioned after her death – her pillboxes and playing cards, two silver-mounted ivory lemon-squeezers. — 2018
2. •
   A flat, concrete gun emplacement.

   • Beneath the wide steppe sky women in white kerchiefs were digging trenches and building small pillboxes, looking up now and again in case 'those vermin' were on the wing. — 2019
3. •
   (slang, no longer used) A doctor's carriage.