A square is a regular quadrilateral with four equal sides and four right angles. Square or Squares may also refer to: Mathematics and science Square (algebra), multiplying a number or expression by itself Square (cipher), a cryptographic block cipher Global square, a principle in infinitary combinatorics Square number, an integer that is the square of another integer Square of a graph Square wave, a non-sinusoidal periodic waveform Construction Square (area), an Imperial unit of floor area and other construction materials Square, a public meeting place: Garden square, an open space with buildings surrounding a garden Market square, an open area where market stalls are traditionally set out for trading Town square, an open area commonly found in the heart of a traditional town used for community gatherings Square (tool), an L- or T-shaped tool: Combination square, a tool with a ruled blade and one or more interchangeable heads Machinist square, a metalworking tool used to produce right angles Steel square, also called a "framing" or "carpenter's" square, produces right angles Try square, a woodworking tool for checking right angles Quadrature (mathematics), the process of producing right angles (squaring) Arts, entertainment, and media Music Square (album), an album by Buck 65 Square (band), a musical trio from Lincoln, Nebraska Square (EP), an EP by Red Square Black "Square", a song by Mitski from Retired from Sad, New Career in Business "Squares", a song by That Handsome Devil from A City Dressed in Dynamite Brands and enterprises Block, Inc., an American financial services and digital payments company, formerly known as Square Inc. Square (financial services), the payment system operated by Block, Inc. Square (video game company), Japanese former video game company Squares (crisps), British brand of crisps Sports Square, the area in the middle of a cricket outfield on which the primary playing surfaces, known as pitches or wickets, are positioned Square leg, a fielding position in cricket Square characters and boxes ■, □, ▪, ▫ (Geometric Shapes) ㅁ, ᆷ, ᄆ (Hangul letter "m") ロ (Ro (katakana)) 口 (Kangxi radical 30, "mouth") 囗 (Kangxi radical 31, "enclosure") , the symbol of the D'Alembert operator Other uses Square (astrological aspect), an aspect of 90 degrees Square (dessert), a dessert bar with the texture of a firm cake but softer than a cookie Square (sailing), to adjust the position of the yardarms on a square-rigged vessel to a 90 degree angle with the keel