(ˈsɪbʃɪp) n (Genetics) a group of children of the same parents
sibship
sibship
[sib´ship] a group of individuals born of the same parents.
sib·ship
(sib'ship), 1. The reciprocal state between individuals who have the same pair of parents. 2. All progeny of one pair of parents. [A.S. sib, relationship]