(slang) A throw-up; a piece of graffiti produced relatively quickly, generally with a single-colour outline and one layer of fill colour.
2001, Free agents: a history of Washington, D.C. graffiti (page 71)Even more impressive is that at the same time, he kept D.C. locked with a steady flow of tags and throwies...
2009, Eric Felisbret, Luke Felisbret, James Prigoff, Graffiti New York (page 130)IN is legendary because until IZ, he had the most two-letter throwies in history.