American English

Definition of thorn noun from the Oxford Advanced American Dictionary



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  1. 1a small, sharp, pointed part on the stem of some plants, such as roses
  2. 2a tree or bush that has thorns see also blackthorn, hawthorn
  3. 3(phonetics) the letter that was used in Old English and Icelandic to represent the sounds/θ/ and/ð/ and later written as th
  4. Idioms
    a thorn in somebody's side
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    a person or thing that repeatedly annoys someone or stops them from doing something
See the Oxford Advanced Learner's Dictionary entry: thorn

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