SQUARE, a difficult idiom ?

Noun

• S: (n) square, foursquare ((geometry) a plane rectangle with four equal sides and four right angles; a four-sided regular polygon) "you can compute the area of a square if you know the length of its sides"
• S: (n) square, second power (the product of two equal terms) "nine is the second power of three"; "gravity is inversely proportional to the square of the distance"
• S: (n) public square, square (an open area at the meeting of two or more streets)
• S: (n) square (something approximating the shape of a square)
• S: (n) square, lame (someone who doesn’t understand what is going on)
• S: (n) square, square toes (a formal and conservative person with old-fashioned views)
• S: (n) square (any artifact having a shape similar to a plane geometric figure with four equal sides and four right angles) "a checkerboard has 64 squares"
• S: (n) square (a hand tool consisting of two straight arms at right angles; used to construct or test right angles) "the carpenter who built this room must have lost his square"