Slender or fair
Keilee is a modern phonetic spelling of the Irish name Kelly or the Gaelic-derived Kaylee. It typically traces back to the Irish surname O'Ceallaigh, meaning descendant of Ceallach, which is often interpreted as war, strife, or bright-headed. In its modern American usage, it is frequently associated with the meaning slender or fair.
Less common today
Keilee isn't in the latest US Top 1000. It last peaked at #3,956 in 2007.
US births per 5-year period, 1990βpresent (SSA data).