yellow flowers in general

(literary) the chrysanthemum flower; often used in poetry to represent autumn or resilience

the daylily or citron daylily; the flower is often dried and used in Chinese cooking

(bound form) used of a young person who is a virgin, especially in terms like 黄花闺女 huáng​huā​guī​nǚ or 黄花后生 huáng​huā​hòu​sheng