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thorn

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thorn/ˈθoɚn/noun
pluralthorns
thorn
/ˈθoɚn/
noun
pluralthorns
Learner's definition of THORN  
[count]
: a sharp point on the stem of some plants (such as roses)
— see color picture on this page
British : a tree or bush that has thorns

a thorn in the/your flesh/side

: a person or thing that repeatedly annoys you or causes problems for you

— thorned

/ˈθoɚnd/adjective

— thornless

/ˈθoɚnləs/adjective
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