Save Type Surname (from occupation) Usage Irish Pronounced Pron. mək-JI-lə-on [key·IPA] Expand LinksMeaning & History Irish Gaelic form of MCLAIN. DetailsRelated Names VariantsMacLean, McLain, McLean, MondayOther Languages & CulturesMac Gilleain, MacLean, McLain, McLean(Scottish) Entry updated January 22, 2019 ·