出典:Wiktionary
出典:『Wiktionary』 (2025/06/02 22:24 UTC 版)
Reduced Anglicized form of Irish Mac Oisdealbhaigh (“son of Oisdealbhach”), a personal name composed of the elements os (“deer”) and dealbhach (“resembling, in the form of”).
Costello (countable and uncountable, plural Costellos)