noun

• (especially in the plural) Tattered clothes (clothing).
  "—What a pretty dress! —What, this old rag?"
• (derogatory) A shabby, beggarly person; synonym of ragamuffin.
  "For upon the like Proclamation there, they all came in, both tag and rag"
• (nautical, slang) A sail, or any piece of canvas.
  "Our ship was a clipper, with every rag set, stunsails, sky-scrapers, and all."
• (singular or plural, slang) Sanitary napkins, pads, or other materials used to absorb menstrual discharge.
  ""It's heaviest on the first day, which might be why it hurts so much. After that, it slows down and eventually stops, but you'll need the rags for about a week.""

verb

• (transitive) To decorate (a wall, etc.) by applying paint with a rag.
• (intransitive) To become tattered.
• (intransitive, vulgar, slang, sometimes euphemistic) To menstruate.

verb

• (British slang) To drive a car or another vehicle in a hard, fast or unsympathetic manner.

noun

• (dated) A prank or practical joke.
  "The rascal winked and grinned. 'There are always and means,' said he. 'But don't blame your foreman. He thought it was just a rag. I swapped clothes with his assistant, and in I came.'"
• (UK, Ireland) A society run by university students for the purpose of charitable fundraising.