burn

For the verb: "to burn"

Simple Past:	burned, burnt
Past Participle:	burned, burnt

Concise Oxford English Dictionary © 2008 Oxford University Press:
burn1

▶verb (past and past part. burned or chiefly Brit. burnt)

• 1 (of a fire) flame or glow while consuming a fuel.

  ■ use (a fuel) as a source of heat or energy.

• 2 be or cause to be harmed or destroyed by fire.

  ■ (of the skin) become red and painful through exposure to the sun.

  ■ feel hot as a result of illness, injury, or emotion.

• 3 (be burning with) be entirely possessed by (a desire or emotion).

• 4 (burn out) become exhausted through overwork.

• 5 informal drive very fast.

• 6 (burn someone up) N. Amer. informal make someone very angry.

• 7 produce (a CD) by copying from an original or master copy.

▶noun

• 1 an injury or area of damage caused by burning.

  ■ a painful sensation in the muscles experienced as a result of sustained exercise.

• 2 a firing of a rocket engine in flight.

• 3 N. Amer. & Austral./NZ an act of clearing of vegetation by burning.

– phrases
burn one's boats (or bridges) do something which makes turning back impossible.
burn the candle at both ends go to bed late and get up early.
burn a hole in one's pocket (of money) tempt one to spend it quickly or extravagantly.
burn the midnight oil work late into the night.
burn rubber informal drive very fast.

– origin OE birnan ‘be on fire’ and bærnan ‘consume by fire’, both from the same Gmc base.

Concise Oxford English Dictionary © 2008 Oxford University Press:
burn2

▶noun Scottish & N. English a small stream.

– origin OE burna, burn(e), of Gmc origin.