From WordNet (r) 3.0 (2006): sis n 1: a female person who has the same parents as another person; "my sister married a musician" [syn: sister, sis] [ant: blood brother, brother]
sis n 1: a female person who has the same parents as another person; "my sister married a musician" [syn: sister, sis] [ant: blood brother, brother]
