# sibling

Pronunciation: US say "SIB-ling" /ˈsɪb.lɪŋ/; UK

## Noun

1. A person who shares at least one parent with you; a brother or sister.
   - Simple: A brother or sister: someone who has the same mother or father as you.
   - _Each sibling inherited an equal share of the family estate._
   - _Twins are siblings born within minutes of each other._
2. The species most closely related to a given one, or any of several equally close species when no single closest relative can be singled out.
   - Simple: The species that is most closely related to another, sharing the nearest common ancestor.
   - _Using DNA, researchers learned that the two birds are sibling species that split apart quite recently._
   - _Because sibling species often look almost identical, experts may need DNA tests to tell them apart._

## Other meanings

- (noun) Within a data structure, a node that shares its immediate parent node with one or more other nodes.

## Origin

First used around 1903, "sibling" is a modern revival of the Old English "sibling" ("relative, kinsman"), formed from "sib" plus "-ling" and related to German "Sippe." It originally meant simply a kin or relative, but in the 20th century it took on its specialized meaning through the study of genetics.

Source: DictionaryAI, https://dictionaryai.com/define/sibling (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).