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triangle - definition and synonyms


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noun [countable] triangle pronunciation in British English /ˈtraɪæŋɡ(ə)l/
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  1. 1
    maths a flat shape that has three straight sides and three angles
    1. a.
      something that has the shape of a triangle

      a triangle of land

  2. 2
    a simple musical instrument consisting of a metal triangle that you hit with a metal bar. The triangle is a percussion instrument.
  3. 3
    a situation in which three people or groups are involved, although they have different opinions, ideas, or aims

    a love triangle



to fall over forwards so that your face hits the ground or another surface

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the activity of exploring abandoned buildings and other manmade structures

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