Pure or slender
Kayleena is a modern American elaboration of Kaylee, combining the popular 'Kay' prefix with the lyrical 'leena' suffix. It likely draws its roots from the Greek 'katharos' meaning pure, or the Irish 'caol' meaning slender.
Less common today
Kayleena isn't in the latest US Top 1000. It last peaked at #5,618 in 1993.
US births per 5-year period, 1990βpresent (SSA data).