noun

• (slang) An intense non-physical sting, as left by shame or an effective insult.
• (slang) An effective insult, often in the expression sick burn (excellent or badass insult).
• (uncountable, UK, chiefly prison slang) Tobacco.
  "TOM: I’m serious bruv. Put my burn and lighter and all that in my jeans please and give them here, then press the cell bell."
• (computing) The writing of data to a permanent storage medium like a compact disc or a ROM chip.
  "Allow additional burns enables you to create a multisession CD, which can be used again to write more data."

verb

• (transitive) To cause to be consumed by fire.
  "He burned his manuscript in the fireplace."
• (intransitive) To be consumed by fire, or in flames.
  "He watched the house burn."
• (transitive) To overheat so as to make unusable.
  "He burned the toast. The blacksmith burned the steel."
• (intransitive) To become overheated to the point of being unusable.
  "The grill was too hot and the steak burned."

noun

• (Northern England, Scotland) A large stream.
  "This darksome burn, horseback brown, / His rollrock highroad roaring down, / In coop and in comb the fleece of his foam / Flutes and low to the lake falls home."