knacker Meaning, Definition & Usage

  1. noun someone who buys old buildings or ships and breaks them up to recover the materials in them
  2. noun someone who buys up old horses for slaughter

WordNet

Knack"er noun
Definitions
  1. One who makes knickknacks, toys, etc. Mortimer.
  2. 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. Halliwell.
Knack"er noun
Etymology
Cf. Icel.hnakkr a saddle.
Definitions
  1. a harness maker. Obs. or Prov. Eng. Halliwell.
  2. One who slaughters worn-out horses and sells their flesh for dog's meat. Eng.

Webster 1913