Type Word Usage Ancient Irish Meaning & History Old Irish word meaning "whelp". See All RelationsRelated Items Given Name DescendantsColin, Cullen(English) Coilean, Colin(Irish) Cailean, Colin(Scottish) Surname DescendantsCollins, Cullen, MacCailín, Ó Coileáin(Irish) MacCailín, MacCallion(Scottish) Entry updated December 3, 2014