KNACKER
knacker
(noun) someone who buys up old horses for slaughter
knacker
(noun) someone who buys old buildings or ships and breaks them up to recover the materials in them
Source: WordNet® 3.1
Etymology
Noun
knacker (plural knackers)
One who makes knickknacks, toys, etc.
One of two or more pieces of bone or wood held loosely between the fingers, and struck together by moving the hand; a clapper.
A harness maker.
One who slaughters and (especially) renders worn-out livestock (especially horses) and sells their flesh, bones and hides.
One who dismantles old ships, houses, etc. and sells their components.
(Ireland, British, offensive) A member of the Travelling Community; a Gypsy.
(Ireland, offensive, slang) A person of lower social class; a chav, skanger or scobe.
(UK, slang, mostly, in the plural) A testicle.
(UK, dialect, obsolete) A collier's horse.
Verb
knacker (third-person singular simple present knackers, present participle knackering, simple past and past participle knackered)
(UK slang) To tire out, exhaust.
(UK slang) To reprimand.
Source: Wiktionary
Knack"er, n.
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, n. Etym: [Cf. Icel.hnakkr a saddle.]
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.]
Source: Webster’s Unabridged Dictionary 1913 Edition