A kind of torpedo, invented by Robert Whitehead.
1884. Pall Mall Gaz., 13 Nov., 5/2. A blow with even an ordinary Whitehead, let alone the improved Whitehead of the German navy, would practically rip the bottom out of the strongest ship afloat.
1898. Kipling, Fleet in Being, v. 54. Fancy a Whitehead smitten on the nose by one little shell.