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1a small, sharp, pointed part on the stem of some plants, such as roses
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- 2a tree or bush that has thorns see blackthorn, hawthorn
- 3(phonetics) the letter that was used in Old English and Icelandic to represent the sounds/θ/ and/ð/ and later written as th Idioms
a person or thing that repeatedly annoys someone or stops them from doing something
Check pronunciation: thorn