Tarring and feathering is a form of public humiliation used to enforce unofficial justice or revenge. It was used in feudal Europe and its colonies in the early modern period, as well as the early American frontier, mostly as a type of mob vengeance (compare Lynch law).
In a typical tar-and-feathers attack, the mob's victim was stripped to the waist. Liquid tar was either poured or painted onto the person while he was immobilized. Then the victim either had feathers thrown on him or was rolled around on a pile of feathers so that they stuck to the tar. Often, the victim was then paraded around town on a cart or wooden rail. The aim was to inflict enough pain and humiliation on a person to make him either conform his behavior to the mob's demands or be driven from town.
The image of the tarred-and-feathered outlaw remains a metaphor for public humiliation. To "tar and feather" someone can mean to punish or severely criticize that person.
The earliest mention of the punishment appears in orders that Richard I of England issued to his navy on starting for the Holy Land in 1189. "Concerning the lawes and ordinances appointed by King Richard for his navie the forme thereof was this ... item, a thiefe or felon that hath stolen, being lawfully convicted, shal have his head shorne, and boyling pitch poured upon his head, and feathers or downe strawed upon the same whereby he may be knowen, and so at the first landing-place they shall come to, there to be cast up" (transcript of original statute in Hakluyt's Voyages, ii. 21).
A later instance of this penalty appears in Notes and Queries (series 4, vol. v), which quotes James Howell writing in Madrid in 1623 of the "boisterous Bishop of Halberstadt ... having taken a place where there were two monasteries of nuns and friars, he caused divers feather beds to be ripped, and all the feathers thrown into a great hall, whither the nuns and friars were thrust naked with their bodies oiled and pitched and to tumble among these feathers, which makes them here (Madrid) presage him an ill-death." (The Bishop was apparently Christian the Younger of Brunswick.)