In a polygamous marriage, a woman who is simultaneously the sister and co-wife of another.
Sister-wife Sentence Examples
Ptolemy deified his parents as the Oeol AS€A401, and his sister-wife, after her death (270), as Philadelphus.
Cleopatra compelled Soter to divorce his sister-wife Cleopatra and marry another sister, Selene.
Later she commonly wore the horns of a cow, and the cow was sacred to her; it is doubtful, however, whether she had any animal representation in early times, nor had she possession of any considerable locality until a late period, when Philae, Behbet and other large temples were dedicated to her worship. Yet she was of great importance in mythology, religion and magic, appearing constantly in the very ancient Pyramid texts as the devoted sister-wife of Osiris and mother of Horus.