Easton's Bible Dictionary: M. G. Easton, M.A., D.D.
Not my people, a symbolical name given by God's command to Hosea's second son in token of Jehovah's rejection of his people (Hos. 1:9, 10), his treatment of them as a foreign people. This Hebrew word is rendered by "not my people" in ver. 10, 2:23.