Definition of: anvil

(an′vil) noun
1. A heavy block of iron or steel on which metal may be forged.
2. Anything similar to an anvil, as the lower contact of a telegraph key, etc.
3. Anat. The incus of the inner ear.
4. That part of the primer in a cartridge or shell which receives the impact of the firing pin and detonates the charge.
5. Mech. The fixed element of a measuring device, as in calipers.
—v.t. & v.i. an·viled or ·villed, an·vil·ing or ·vil·ling To work at or shape on an anvil [OE anfilte]
DOUBLE-BEAK ANVIL
a. Rounded beak. b. Flat beak. c. Cutter, or chisel hole.