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

Tony Becerra's sibling was quoted by Aurora police in a 2020 police report obtained by CBS News. —Brian Maass, CBS News, 22 Jan. 2026

The premise of Peppa Pig, which centers on the everyday life of the titular Peppa, her parents, siblings, and friends, may sound simple. —Kara Nesvig, Parents, 22 Jan. 2026

Like its many siblings, EC 53 is encased by extremely hot dust and gas—exactly the type of environment capable of forging crystalline silicates. —Andrew Paul, Popular Science, 22 Jan. 2026

The narrative tracks the siblings’ volatile relationship over one summer as their family navigates questions of identity and connection in their Czech border town. —Naman Ramachandran, Variety, 22 Jan. 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