Found 2 items, similar to Sister-in-law.
English → English (WordNet) Definition: sister-in-law sister-in-law n : the sister of your spouse [also: sisters-in-law (pl)]
English → English (gcide) Definition: Sister-in-law Sister-in-law \Sis"ter-in-law`\, n.; pl. Sisters-in-law. The sister of one's husband or wife; also, the wife of one's brother; sometimes, the wife of one's husband's or wife's brother. [1913 Webster]