sibling

• POS: Noun
• HYPHEN: sib=ling

CIDE DICTIONARY

sibling, n. [sub + -ling.].

 a brother or a sister.
"Siblings have at least one parent in common. Those related only by a common mother are uterine siblings; those related only by a common father are agnate siblings or consanguine siblings (a legal term). A sibling having both parents in common is a sibling-german or a full brother or full sister. These modifying terms are more commonly used for the more specific uterine brother, uterine sister, agnate brother, brother-german, etc."  [PJC]

sibling, a. 

 of or pertaining to a sibling, n.; as, sibling rivalry: the common rivalry between siblings.  [PJC]

OXFORD DICTIONARY

sibling, n. each of two or more children having one or both parents in common.

Etymology

SIB + -LING(1)

THESAURUS

sibling

affiliated, agnate, akin, allied, ancestry, avuncular, blood, blood relation, blood relative, clansman, closely related, cognate, collateral, collateral relative, congeneric, connections, consanguine, consanguinean, consanguineous, distaff side, distant relation, distantly related, enate, family, flesh, flesh and blood, folks, foster, german, germane, kin, kindred, kinfolk, kinnery, kinsfolk, kinsman, kinsmen, kinswoman, kith and kin, matrilateral, matrilineal, matroclinous, near relation, next of kin, novercal, of the blood, patrilateral, patrilineal, patroclinous, people, posterity, related, relations, relatives, sib, spear kin, spear side, spindle kin, spindle side, sword side, tribesman, uterine, uterine kin

ROGET THESAURUS

sibling

Consanguinity

N consanguinity, relationship, kindred, blood, parentage, filiation, affiliation, lineage, agnation, connection, alliance, family connection, family tie, ties of blood, nepotism, kinsman, kinfolk, kith and kin, relation, relative, connection, sibling, sib, next of kin, uncle, aunt, nephew, niece, cousin, cousin- german, first cousin, second cousin, cousin once removed, cousin twice removed, ear relation, distant relation, brother, sister, one's own flesh and blood, family, fraternity, brotherhood, sisterhood, cousinhood, race, stock, generation, sept, stirps, side, strain, breed, clan, tribe, nation, related, akin, consanguineous, of the blood, family, allied, collateral, cognate, agnate, connate, kindred, affiliated, fraternal, intimately related, nearly related, closely related, remotely related, distantly related, allied, german.