American English

Definition of square noun from the Oxford Advanced American Dictionary



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  1. 1[countable] a shape with four straight sides of equal length and four angles of 90°; a piece of something that has this shape First break the chocolate into squares. The floor was tiled in squares of gray and white marble. see also T-square
  2. in town
  3. 2[countable] an open area in a town, usually with four sides, surrounded by buildings The hotel is just off the main square. the market/town/village square
  4. 3Square [singular] (abbreviation Sq.) (used in addresses) They live at 5 Plymouth Square.
  5. mathematics
  6. 4[countable] the number obtained when you multiply a number by itself The square of 7 is 49.
  7. boring person
  8. 5[countable] (informal) (old-fashioned) (disapproving) a person who is considered to be boring, for example because they are old-fashioned or because they work too hard at school
  9. Idioms
    back to square one
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    a return to the situation you were in at the beginning of a project, task, etc., because you have made no real progress If this suggestion isn't accepted, we'll be back to square one.
See the Oxford Advanced Learner's Dictionary entry: square