To be on fire; undergo combustion. A substance burns if it is heated up enough to react chemically with oxygen.
To cause a burn to a bodily tissue.
Noun
Tissue injury caused by fire, heat, radiation (such as sun exposure), electricity, or a caustic chemical agent. Burns are classified according to the degree of tissue damage, which can include redness, blisters, skin edema and loss of sensation. Bacterial infection is a serious and sometimes fatal complication of severe burns.
[burnz] 
), 1896–1996, U.S. comedian (partner and husband of Gracie Allen).