Save Type Surname (from occupation) Usage Scottish Pronounced Pron. /mə.ˈkleɪn/ [key·simplify] Meaning & HistoryExpand Links Variant of McLean. Related NamesDetails Rootsgilla + EòinVariantsMcClain, McLain, McLean(Scottish) MacGillEain(Scottish Gaelic) Other Languages & CulturesMac Giolla Eoin, Monday(Irish) Categories anglicizations