Updated May 5, 2021 Share: Girl name origins & meanings Irish : Rejoicer; waterfall; pool; pure; impetuousAmerican : Pure; keeper of the keys Girl name variations Kaelin Kaelan Kaelen Kaelinn Kaeylynn Kaelynne Kaylyn Kaylynn Boy name origins & meanings Irish : Laughing Boy name variations Kaylen Kaylan Kaylon Kaylyn How Popular Is The Name Kaylin