burn

1 : bodily injury resulting from exposure to heat, caustics, electricity, or some radiations, marked by varying degrees of skin destruction and hyperemia often with the formation of watery blisters and in severe cases by charring of the tissues, and classified according to the extent and degree of the injury—see first-degree burn, second-degree burn, third-degree burn
2 : an abrasion having the appearance of a burn <friction burns> <cold burn>
3 : a burning sensation <the burn of iodine applied to a cut>