Definify.com
Webster 1913 Edition
Sib
1.
A blood relation.
[Obs.]
Nash.
Sib
,Adj.
Related by blood; akin.
[Obs. or Prov. Eng. & Scot.]
Sir W. Scott.
Your kindred is but . . . little
sib
to you. Chaucer.
[He] is no fairy birn, ne
To elfs, but sprung of seed terrestrial.
sib
at allTo elfs, but sprung of seed terrestrial.
Spenser.