singe
To burn something lightly on the surface without destroying it.
To singe means to burn something slightly on the surface, usually by accident. When you pass your hand too quickly over a candle flame, you might singe the tiny hairs on your arm. When a chef leans over a gas stove, the flame might singe the ends of their hair.
The word suggests a quick, superficial burn that browns or blackens the surface without destroying the whole thing. A singed piece of paper has blackened, curled edges but remains mostly intact. Fabric that gets too close to a campfire might get singed, leaving brown marks and a burnt smell even though it doesn't catch fire.
Sometimes singeing happens on purpose. Chefs singe the skin of a plucked chicken or duck to remove any remaining tiny feathers. Historically, people would singe the end of a rope to prevent it from unraveling.