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