Definition from Wiktionary, the free dictionary
|simpl. and trad.|
- Originally used by poets such as Li Bai for its literal meaning. Later poets such as Su Shi used this phrase as a metaphor for the beauty of a woman's eyes. This is the colloquial usage that we see today.
秋波 (traditional and simplified, Pinyin)
This phrase can also be used in the context of someone who figuratively bats their eyes (as a way to get something that they want).