Origin: 1940–45; cf. Ulster E Taig contemptuous term for a Roman Catholic Irishman, archaic E teague derogatory name for an Irishman < Ir Tadhg a common personal name
c.1400, "cur, mongrel," from O.N. tik "bitch," related to M.L.G. tike. Also applied to a low-bred or lazy man. The meaning "child" is from 1902, though it was used in playful reproof from 1894.