English

Definition of razor-thin adjective from the Oxford Advanced Learner's Dictionary

 

razor-thin

 adjective
adjective
BrE
 
; NAmE
 
(North American English)
 
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(of a victory in an election, etc.) won by a very small number of votes The Republican Senator won a third term by a razor-thin edge over his Democratic challenger.
See the Oxford Advanced American Dictionary entry: razor-thin