(1)
A kind of Gui
Jade Wan with a round top and no edges and corners is only seen by disciples, and the friendship is gradually thinning. -Southern Dynasties
Bao Zhao's Eight Poems of Imitating the Ancient
(2)
Beautiful jade
. Such as: Wan Yan (Wan Gui and Yan Gui. Often used as a metaphor for glittering and translucent and beautiful things); Wan Xiang (beautiful jade and ivory)
Wan is suitable for girls as names.