Definitions for SIBsɪb
Random House Webster's College Dictionary
related by blood; akin.
(n.)a relative; kinsman or kinswoman.
Anthrop. a unilateral descent group.
Origin of sib:
bef. 900; ME sib(e), sibb(e), OE sib(b) (orig. adj.), c. OFris sib, OHG sippi related, ON sifjar (pl.) relatives, Go sibja relationship; cf. gossip
a person's brother or sister
blood relation, blood relative, cognate, sib(noun)
one related by blood or origin; especially on sharing an ancestor with another
a blood relation
related by blood; akin