English

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

 

thumbtack

 noun
noun
BrE BrE//ˈθʌmtæk//
 
; NAmE NAmE//ˈθʌmtæk//
 
(also tack) (both North American English) (British English drawing pin)
 
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a short pin with a large round flat head, used especially for fastening paper to a board or wall
See the Oxford Advanced American Dictionary entry: thumbtack

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