D defs.my
Entry 5 senses Webster, 1913

Breaker

/brāʹkər/ · Break·er · IPA /ˈbɹeɪkɚ/
01 n. One who, or that which, breaks.
  1. 1.
    One who, or that which, breaks.
    “I'll be no breaker of the law.” Shak.
  2. 2.
    Specifically: A machine for breaking rocks, or for breaking coal at the mines; also, the building in which such a machine is placed.
  3. 3.
    A small water cask.(Naut.)
  4. 4.
    A wave breaking into foam against the shore, or against a sand bank, or a rock or reef near the surface.
    “The breakers were right beneath her bows.” Longfellow.
  5. 5.
    a quarry worker who splits off blocks of stone.
Syn. ledgeman.