Definitions

1. noun

A small, reddish-brown spot or patch on the skin, often resulting from acne or other skin conditions.

“After a series of breakouts, she noticed a persistent brunissure on her forehead.”

2. noun

A small, reddish-brown patch on a surface, especially one caused by rust or oxidation.

“The mechanic pointed out a brunissure on the car’s engine, indicating a potential problem.”