To burn something slightly, usually hair or clothes.
Singed can make people think of a small fire or a bad smell.
Examples:
She singed her hair on the candle.
The chef singed his apron while cooking.
The cat singed its fur on the stove.
I singed my eyebrows while lighting the grill.
He accidentally singed his socks on the heater.
The dragon singed the knight's cape with its fiery breath.