Slender or fair
Keili is a modern phonetic spelling of the Irish name Kayley or Ceilidh. It is derived from the Gaelic word 'caol', meaning slender, or refers to a traditional social gathering or dance.
Less common today
Keili isn't in the latest US Top 1000. It last peaked at #4,603 in 2008.
US births per 5-year period, 1990βpresent (SSA data).