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

Their chemistry on the ice is so apparent because 17-year-old Justin Lue and 15-year-old Suri Lue are siblings. —Krystle Rich, CBS News, 13 Mar. 2026

For most of the evening, the mood is darkly funny and a little ominous, as the siblings take undermining jabs and the in-laws roll their eyes. —Emily Nussbaum, New Yorker, 12 Mar. 2026

As childhood memories are made and fade in the same instant, siblings Lily and Bodhi diverge at the dawn of life beyond their home, a Colorado alligator sanctuary. —Matthew Carey, Deadline, 12 Mar. 2026

The hosts also talk about changes at the New York Giants, where co-owner Steve Tisch and his siblings are reportedly transferring all of their remaining ownership in the NFL team—about 23%, according to ESPN—to their children. —Eben Novy-Williams, Sportico.com, 12 Mar. 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