Meaning A girl's name of Gaelic origin, it means "Girl; Lass." Origin of Caileen Gaelic , Irish +-100%Zoom level changed to 1 Popular Middle Names Elizabeth Pronunciation 🔊 Listen Caileen Similar Names Caylin Ethne Siubhan Trina Aimil Diorbhall Eihhlin Giorsal Moibeal Sighle Year by Year Popularity of Caileen