People with the name Tris have a deep inner desire to serve humanity and to give to others by sharing money, knowledge and experience, or creative and artistic ability.
People with the name Nanci have a deep inner desire to use their abilities in leadership, and to have personal independence. They would rather focus on large, important issues, and delegate the details.
From the Chinese character 阿 (ā), which has no distinct meaning. It is not normally given as a name, but it can be prefixed to another name to make it a diminutive.