also: ブルーネット
brunette; brown-haired woman or girl
Usually refers to a woman or girl with dark brown hair. In Japanese it is a specific foreign-style description and is less everyday than expressions such as 茶色い髪 or 茶髪.
The brunette in the middle of the photo is my older sister.
brown-skinned or brown-eyed woman or girl
A less common descriptive use referring to complexion or eye color rather than only hair color; context usually needs to make the intended feature clear.
In that novel, the heroine is portrayed as a brunette with brown skin and brown eyes.
She's a brunette with green eyes.
The movie's lead role was played by a brunette woman.