sib

[ sib ]
/ sɪb /

adjective

related by blood; akin.

noun

a kinsman; relative.
one's kin or kindred.
Anthropology. a unilateral descent group.

Origin of sib

before 900; Middle English sib(e), sibb(e), Old English sib(b) (orig. adj.); cognate with Old Norse sifjar (plural) relatives, Old Frisian sib (adj.), sibba (noun), Middle Dutch sibbe (noun and adj.), German Sippe kin; cf. gossip
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sib

British Dictionary definitions for sib (1 of 2)

sib

/ (sɪb) /

noun

a blood relative
a brother or sister; sibling
kinsmen collectively; kindred
any social unit that is bonded by kinship through one line of descent only

Word Origin for sib

Old English sibb; related to Old Norse sifjar relatives, Old High German sippa kinship, Latin suus one's own; see gossip

British Dictionary definitions for sib (2 of 2)

SIB

abbreviation for (in Britain)

(the former) Securities and Investments Board

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for sib

sib

[ sĭb ]

n.

A blood relation; a relative.
A person's relatives when considered as a group; kinfolk.
A brother or sister; a sibling.

adj.

Related by blood; kindred.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.