Definition of erection noun from the Oxford Advanced American Dictionary

     

    erection

     noun
    noun
    NAmE//ɪˈrɛkʃn//
     
     
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  1. 1[countable] if a man has an erection, his penis is stiff because he is sexually excited to get/have an erection
  2. 2[uncountable] (formal) the act of building something or putting it in a vertical position the erection of scaffolding around the building
  3. 3 [countable] (formal) a structure or building, especially a large one The café was a bleak, concrete erection with plastic tables and chairs.
See the Oxford Advanced Learner's Dictionary entry: erection