sibling

noun

sib·​ling ˈsi-bliŋ 

1

: sib sense 2

also : one of two or more individuals having one common parent

2

: one of two or more things related by a common tie or characteristic

the sedan's smaller sibling

Examples of sibling in a Sentence

Recent Examples on the Web

The Sosa siblings’ father, along with his two other sons and an uncle, set off to the Bahamas immediately on Monday afternoon to start searching themselves via boat. — Alex Harris updated September 8, Miami Herald, 8 Sep. 2026

Liu, the gold-medal figure skater, and her four siblings were conceived via surrogate. — E. Alex Jung, Vulture, 8 Sep. 2026

The name was originally Bugatchi Uomo and was created by the siblings as a nod to the Italian aesthetic. — Jean E. Palmieri, Footwear News, 8 Sep. 2026

For the past four years, George, 13, has attended Lambrook School with his younger siblings, Princess Charlotte, 11, and Prince Louis, 8. — ABC News, 8 Sep. 2026

Word History

First Known Use

before the 12th century, in the meaning defined at sense 1

Phrases Containing sibling

• sibling rivalry
• sibling species

Kids Definition

sibling

noun

sib·​ling ˈsib-liŋ 

: one of two or more individuals having the same parents or sometimes only one parent in common

Medical Definition

sibling

noun

sib·​ling ˈsib-liŋ 

: sib

also : one of two or more individuals having one common parent