Meaning A girl's name of Gaelic origin, it means "Girl; Lass." Origin of Caileen Gaelic , Irish Popular Middle Names Elizabeth Pronunciation 🔊 Listen Caileen Similar Names Caylie Afkica Barabell Deardriu Eideann Eihhlin Ghleanna Marsali Mildread Rhoswen Year by Year Popularity of Caileen