noun
blue eyebrow pencil; blue eyebrows
Refers to a traditional cosmetic used to paint eyebrows blue, or the resulting blue eyebrows themselves. Associated with historical or classical makeup styles.
平安時代の女性は青黛で眉を描いた。
Women in the Heian period drew their eyebrows with blue eyebrow pencil.
noun
Describes a rich, dark blue color, often used in poetic or literary contexts. The term is relatively rare in modern everyday language.
青黛の空に星が輝いていた。
Stars were shining in the deep blue sky.