Noun
(colloquial, endearing) A wife.
Synonyms: wifekin, wifeling, (obsolete) wifelkin, wifie
(informal, by extension) A wife who is of small stature.
(informal, by extension) A long-term girlfriend; a mistress (the “other woman” in an extramarital relationship). [from 1960s]
Synonyms: see Thesaurus:mistress