noun

• (obsolete) A man of coarse nature and manners; an awkward fellow; an illbred person; a boor.
  "This loutish clown is such that you never saw so ill - favoured a vizar"
• (obsolete) One who works upon the soil; a rustic; a churl; a yokel.
  "The clown, the child of nature, without guile."

verb

• (intransitive) To act in a silly or playful fashion.
  "Except for Rasheena, the rest of the baby mamas was at least struggling to live halfway right. They used to clown and act shitty whenever they came by Noojie's and saw Carmiesha there. But every last one of them ended up being grateful to her for the things she did for their kids."
• (transitive, African-American Vernacular) To ridicule, make fun of.
  "The show Dismissed was one of my favorites, because I like to see people get clowned."