bickern

from The Century Dictionary.

• noun An anvil with two projecting, tapering ends; hence, one such end; a beak-iron.
• noun Medieval milit., a name for the martel-de-fer, in allusion to its double head, of which one side was made pointed and the other blunt; any similar double-headed weapon or tool.
• noun Any iron implement ending in a beak: as if a contracted form of beak-iron (which see).
• noun Also beckern.

from the GNU version of the Collaborative International Dictionary of English.

• noun An anvil ending in a beak or point (orig. in two beaks); also, the beak or horn itself.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An anvil with two projecting taper ends.