square bracket 

ASCII 91 and 93 (and hence U+005B and U+005D). Used in matching pairs to denote stage directions in a play or additions to a quotation. In programming languages with C-like syntax, square brackets typically enclose array subscripts. In mathematics, their most frequent use is to denote closed intervals of real numbers. On Urban Dictionary, because they're used for markup and there are no escape sequences, opening square brackets can never appear in the text of a definition.

The standard QWERTY keyboard makes square brackets easier to type than parentheses, which is pretty silly considering how much more common parentheses are.

square bracket by Subsequence February 16, 2010

Square Brackets 

The thing used to link other words with

You can use the square brackets to link other words. For example, booty will become booty.

Square Brackets by MyBigFatBoobs January 25, 2020

All square brackets 

When you type every word in square brackets

Person: "Everything I'm typing is in All square brackets, even the comma and colon and period and quotations."

All square brackets by Temprista May 29, 2020

Square Brackets 

The thing that links words within the square brackets

Woah he used square brackets

Square Brackets by dictionary are cool August 18, 2020

square brackets 

a key on the keyboard that the Urban Dictionary HATES

In the boxes below, link to other words with square brackets. For example, booty will become booty.

square brackets by osososososososomom April 8, 2019

The thing that links words within the square brackets 

why are you here

The thing that links words within the square brackets is used to lead you into a different definition and stuff

The thing that links words within the square brackets by dictionary are cool March 28, 2021