The act of claiming that you created a work of art so that you can get in on a small share of the praise and attention that is lavished on the best artists, without. or art is stolen. | Meaning, pronunciation, translations and examples. The Sun ()An intriguing new lead in the world's largest unsolved art heist. Times. Define mobster: someone who is part of a secret organized group of criminals: a "Dutch sleuth hopes for breakthrough in biggest US art heist ", 27 June.