pillbox  
noun [ C ] uk/ˈpɪl.bɒks/ us/ˈpɪl.bɑːks/
  (CONTAINER)     
  药丸盒,药片盒
a small container that pills are carried in
   (BUILDING)     
 碉堡,坚固掩体
a small, very strong building with narrow holes in the walls through which guns can be fired