Mainly used in the UK, a square is a bank card. The term is mostly used by fraudsters.
"Send in squares, instant drops"

"This guy blocked my square ffs"
by fxbienn February 16, 2018
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An innocent person, someone who has no fun and no sense of adventure.
Come on bro you’re such a square”, “Don’t be such a square”
by Lilskies2003 July 13, 2018
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A kind of person who would tie a square knot.
"What's a square knot? It's the type of knot you would tie you fucking square" -Danny Gonzalez
by RealBasicBee December 7, 2022
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Slang for a single cigarette, usually a Newport. Primarily used in the south east.
Yo, son... lemme get a square.
by rabortabort October 6, 2009
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“I’m fiening for a square

What bro

“A cigarette”
by Idk what to make this April 22, 2022
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Geometric shape, the one jerk who didn't show up to the party
by Knight o' Ni February 6, 2021
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