Sib
Sib (sib) , noun
[Anglo-Saxon sibb alliance, gesib a relative. r289. See Gossip.]
1.
A blood relation. [Obsolete] — Nash
2.
a sibling.
Sib , adjective
Related by blood; akin. [Obsolete or Provincial English & Scottish] — Sir W. Scott
Your kindred is but... little sib to you.
[He] is no fairy birn, ne sib at all
To elfs, but sprung of seed terrestrial.