Pure
Kacie is a modern phonetic spelling of the initials K.C. or a diminutive of Catherine. As a derivative of Catherine, it shares the etymological root meaning 'pure'.
Less common today
Kacie isn't in the latest US Top 1000. It last peaked at #499 in 1998.
American news anchor and reporter
First woman to inline skate across the United States
US births per 5-year period, 1990βpresent (SSA data).