Slender or fair
Kayln is a modern American invention, likely created as a phonetic variant of Kaylyn or Caelan. It combines the popular 'Kay' prefix with the 'lyn' suffix, or may derive from the Irish name Caelan, which means slender or fair. Its usage is rare and follows the trend of creative spelling in the late 20th century.
Less common today
Kayln isn't in the latest US Top 1000. It last peaked at #3,762 in 1995.
US births per 5-year period, 1990–present (SSA data).
