Knacker

Webster's Dictionary of the English Language

·noun a harness maker.

II. Knacker ·noun One who makes knickknacks, toys, ·etc.

III. Knacker ·noun One who slaughters worn-out horses and sells their flesh for dog's meat.

IV. Knacker ·noun One of two or more pieces of bone or wood held loosely between the fingers, and struck together by moving the hand;

— called also clapper.