Pure or slender
Kaylinn is a modern American invention, likely created by combining the popular prefix 'Kay' with the suffix 'Lynn'. It is often associated with the Irish name Caoilfhionn, meaning 'slender and fair', or the Greek name Katherine, meaning 'pure'.
Less common today
Kaylinn isn't in the latest US Top 1000. It last peaked at #4,228 in 2014.
US births per 5-year period, 1990–present (SSA data).
