Definition of bore noun from the Oxford Advanced American Dictionary

     

    bore

     noun
    noun
    NAmE//bɔr//
     
    see also bear
     
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  1. 1[countable] a person who is very boring, usually because they talk too much
  2. 2 [singular] a situation or thing that is boring or that annoys you It's such a bore having to stay late tonight.
  3. 3[countable] the hollow inside of a tube, such as a pipe or a gun; the width of the hole synonym gauge a tube with a wide/narrow bore a twelve-bore shotgun
  4. 4[countable] a strong, high wave that rushes along a river from the sea at particular times of the year
  5. 5 [countable] (also borehole) a deep hole made in the ground, especially to find water or oil
See the Oxford Advanced Learner's Dictionary entry: bore