subs. phr. (common).—A small brougham.

1

  1857.  DICKENS, Little Dorrit, I. xxxiii. She drove into town for the purpose, in a one-horse carriage, irreverently called at that period of English history, a PILL-BOX.

2

  2.  (common).—A soldier’s cap.

3

  3.  (American).—A revolver or gun. Also PILL-BOTTLE. See MEAT-IN-THE-POT.

4