1. "Eilis" can be a variant spelling of "Éilis" which is the Irish form of the name "Alice". In this case, its meaning would be "noble" or "truthful".
2. "Eilis" can also be a variant spelling of "Eilis" (no accent) which is derived from the Gaelic name "Aoife". This name means "beautiful" or "radiant".
Therefore, the meaning of "Eilis" depends on the specific spelling and its origins. It can mean "noble," "truthful," "beautiful," or "radiant".