Pure or meadow of the keys
Kayslee is a modern American invention, likely created by blending the name Kay with the popular suffix -lee. It combines the traditional meaning of Kay, which is often associated with purity, with the English 'lee' meaning meadow.
Less common today
Kayslee isn't in the latest US Top 1000. It last peaked at #5,159 in 2020.
US births per 5-year period, 1990βpresent (SSA data).