noun

1. blood relatives; kin
2. a blood relative; kinsman or kinswoman; esp., a brother or sister
3. Anthrop. a group of persons tracing their descent unilineally from a traditional or actual common ancestor
4. Zool. any of the offspring of the same parents in relation to one another

Etymology: ME sibb < OE, kinsman, kinship, akin to Ger sippe, kinship < IE *s(w)ebh-, of the same kind (> OHG Swaba, Swabian) < base *se-, apart > L se

adjective