(UK) A flat triangular piece of plastic or other material, having corners of precise angles, used in technical drawing.
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A right angle tool used to determine if two surfaces join at a 90-degree angle, composed of two arms, usually made from metal.
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Add your own interpretation of "set square".
UK and Irish slang — Cockney, Scouse, Geordie, Yorkshire, Glaswegian, Brummie, Welsh, West Country, plus Irish English. Centuries of regional dialects feeding into modern British and Irish street talk.
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Browse all slang words starting with S.