Used as a boy's name. It's good.
One: Numbers. The smallest number in an integer. Also refers to: concrete; Quite; Inevitable. Everything, everything. Always like this, always like this.
"Shuo Wen Jie Zi" explains the cloud: at first, only Tao stands in one, making a world and turning it into everything. All belong to one.
Dust: originally meant dust, and later extended to the human world and real society, such as the world of mortals.
The meaning of the name can be interpreted interestingly as: "The poor fairy is separated by a dust, and sorrow and joy are worlds apart."