Reading: ū kūn
First, the definition of ū:
bright.
Second, the word combinations of Tan:
Tan Huang, Tan Yu, Tan Huang, Tan Yao and Tan Ye
Tan Yi, Tan Zhao, Tan Huang, Tan. From the fire to the sound of Kun. ?
vernacular version of Shuo Wen Jie Zi: it's full of fire. The glyph uses "fire" as the side and "Kun" as the sound side.
Third, related words:
1. Take a photo [kūn zhào]?
shine; Show off.
2. what about [k ū n Hu dang]?
splendor.
3. Kun Ye [kūn yè]?
brilliance; Brilliant.
4. Kun Yu [kūn yù]?
brilliant.
5. Yao Kun [Yao kū n]?
the light shines. Often used as a metaphor to show prestige, performance, etc.