# square bracket

> English word · Noun

## Definitions
1. Either of a pair of symbols, [ ], used for various purposes, e.g. to enclose text inserted or replaced by an editor, and to indicate various mathematical operations.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/square-bracket