A knacker, knackerman or knacker man is a person who removes and clears animal carcasses from private farms or public highways and renders the collected carcasses into by-products such as fats, tallow
"A Dead Horse on a Knacker's Cart", drawing by Thomas Rowlandson (1757–1827).
A group of dead pigs awaiting pickup by a local knackery, dumped at the edge of a farm site in Scotland; pig farmers in particular prefer the knackery truck not to come close to where live pigs are kept as this is a way that disease can be spread.
Smoke discharging from incinerators at Douglasbrae Knackery, Scotland. The business deals with the disposal of animal carcasses from all over the north-east of Scotland.
An executioner, also known as a hangman or headsman, is an official who effects a sentence of capital punishment on a condemned person.
Knacker
…Ages, the occupation of "knacker man" was frequently considered a disreputable occupation. Knackers were often also commissioned by the courts as public executioners. The oldest recorded use of the word "knacker" dates to 1812, meaning "one who slaughters old or sick horses" and in 1855 "to kill, castrate", and is…
Symbolic robed figure of a medieval public executioner at Peter and Paul Fortress, Saint Petersburg, Russia
Photograph (hand-coloured), original dated 1898, of the lord high executioner of the former princely state of Rewah, Central India, with large executioner's sword (Tegha sword)
Depiction of a public execution in Brueghel's The Triumph of Death 1562–1563
Stylised depiction of public execution of pirates in Hamburg, Germany, 10 September 1573