noun

• A person with golden hair, especially a girl with long hair.
• A goldilocks aster, Aster linosyris.
• The protagonist of a traditional fairy tale. She is a golden-haired young girl who inquisitively enters the house of three bears and tries their three bowls of porridge, three chairs, and three beds, in each case finding only one that suits her.
• (used attributively) A happy medium or optimal point between two extremes.