[count] 1 : a four-sided shape that is made up of four straight sides that are the same length and that has four right angles
▪ The fabric is decorated with circles and squares. ▪ Cut the brownies into squares. — often + of ▪ a square of tile/cloth — see picture at geometry; compare rectangle 2 : any of the squares on a board for playing games (such as chess and checkers)
▪ The board has red and black squares. — see picture at chess 3 mathematics : the number that results from multiplying a number by itself
▪ The square of 2 [=2²] is 4. [=2 x 2 = 4] — compare ¹cube 2 4 : an open area in a village, city, etc., where two or more streets meet
▪ The bank is located at the main square. ▪ the market/town square 5 somewhat old-fashioned, informal + disapproving : someone who does not like or try unusual things that other people consider exciting, interesting, etc.
▪ Don't be such a square. Let's try something different for a change. 6 technical : a flat tool that is used to mark or check angles
▪ a carpenter's square — see picture at carpentry; compare t square 7 chiefly US, informal : square meal
▪ I try to have three squares a day.