noun

• (figurative) Coldness or insensibility; severity or rigidity of character.
  "It was one of those moments of intense feeling when the frost of the Scottish people melts like a snow-wreath."
• (obsolete) The act of freezing; the congelation of water or other liquid.
• (slang, dated) A disappointment; a cheat.
• (television) A kind of light diffuser.
  "Frosts and diffusion are flame retardant and produce similar results except that some of the frosts are very subtle in their effects. For example: Hamburg Frost will soften the beam edge with little additional spread of the beam."

verb

• (transitive) To cover with frost.
• (intransitive) To become covered with frost.
  "“The weather is pleasant while it frosted a little at night.”"
• (transitive) To coat (something, e.g. a cake) with icing to resemble frost.
• (transitive, informal) To anger or annoy.
  "I think the boss's decision frosted him a bit."