Etymology

Noun

1. a thread, used to clean the area between the teeth
2. (raw) silk fibres
3. the fibres covering a corn cob
4. Any thread-like material having parallel strands that are not spun or wound around each other.

   embroidery floss

5. Spun sugar or cotton candy, especially in the phrase "candy floss".

Verb

1. To clean the area between the teeth using floss.
2. To show off, especially by exhibiting one’s wealth or talent.
   • 2003, Vladimir Bogdanov, All Music Guide to Hip-Hop: The Definitive Guide to Rap and Hip-Hop, Backbeat Books, page 554:

     As the label's name no doubt implies, these rappers aren't your typical crew, even if they still like to floss and represent their city.

   • 2003, Wang, Oliver, Classic Material: The Hip-Hop Album Guide, ECW Press, page 134:

     “Ms. Jackson” is probably the most sensitive—and realistic—take on relationships to come out of hip-hop, while “Red Velvet” cautions would-be playas against pushing the floss envelope around “dirty boys” just waiting for a chance to add some gray flecks to that fur.

   • 2007, Azie Faison, Agyei Tyehimba, Game Over: The Rise and Transformation of a Harlem Hustler, Simon and Schuster, page 69:

     It's impossible to floss wealth without attracting envy.