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Definition of pinhole noun from the Oxford Advanced Learner's Dictionary

pinhole

noun
 
/ˈpɪnhəʊl/
 
/ˈpɪnhəʊl/
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  1. a very small hole, especially one made by a pin
    Oxford Collocations DictionaryPinhole is used before these nouns:
    • camera
    See full entry
See pinhole in the Oxford Advanced American Dictionary

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