fem. proper name, alternative form of Anna, from Latin Anna, from Greek, from Hebrew Hannah (see Hannah). In African-American vernacular, "white woman," also "a black woman who is considered to be acting 'too white;' " also Miss Ann (by 1926). She is the spouse of Mr. Charlie.
"children's nurse," 1795, from the widespread child's word for "female adult other than mother" (compare Greek nanna "aunt," and see nana). The word also is a nickname form of the fem. proper name Ann, which probably is the sense in nanny-goat "female goat" (1706, compare billy-goat). Nanny-house "brothel" is slang from c. 1700. Nanny state, in reference to overintrusive government policies is attested by 1987, the term is associated with British political leader Margaret Thatcher, who criticized the tendency. Nannyism in reference to actions or policies considered unduly protective is by 1959; also compare the verb.