derrick

During the reign of Queen Elizabeth I, London was the home of a notorious executioner named Derick. Among those he beheaded was the Earl of Essex, Robert Devereux, who according to a street ballad of the time had once saved the life of the ungrateful executioner. While members of the nobility were accorded the courtesy of beheading, it was the lot of commoners to be hanged, and those sent to face the rope at the hands of the executioner Derick nicknamed the gallows at Tyburn after him. Throughout the 17th century, "derick" was used as a name for both hangman and gallows. After the days of public hangings, the word derrick was adopted as a name for a number of less ominous frameworks or towers.