Boy name origins & meanings
- Scottish : Disciple of Saint Columbia
- Arabic : Dove
Family name origins & meanings
- Scottish : from the Gaelic personal name Maol-Choluim ‘devotee of (Saint) Columba’ (see Colomb).
- Irish (Ulster) : Anglicized form of Gaelic Ó Maolcholuim ‘descendant of the devotee of St. Columba’ (Irish Colum Cille, literally ‘dove of the church’). In Ireland the personal name is often spelled Colm; in Scotland it has become Calum.