Definitions from Wiktionary (thug)

▸ noun:  A person who is affiliated with a criminal gang or engages in violent criminal activity.
▸ noun:  (historical) One of a band of assassins formerly active in northern India who worshipped Kali and sacrificed their victims to her.
▸ noun:  (horticulture) An overvigorous plant that spreads and dominates the flowerbed.
▸ noun:  A violent, aggressive, or truculent criminal.
▸ noun:  A wooden bat used in the game of miniten, fitting around the player's hand.
▸ noun:  (African-American Vernacular) One who, usually as a result of social disadvantage, has turned to committing crimes (e.g. selling drugs, robbery, assault, etc.) to make a living; a gangsta.
▸ verb:  (informal, transitive) To commit acts of thuggery, to live the life of a thug, to menace, to commit crime.
▸ verb:  (informal, transitive) (often with out) To appear as a thug; to dress and act in a manner reminiscent of a thug.

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