Definition of close-run adjective from the Oxford Advanced Learner's Dictionary

 

close-run

 adjective
adjective
BrE BrE//ˌkləʊs ˈrʌn//
 
; NAmE NAmE//ˌkloʊs ˈrʌn//
 
[usually before noun]
 
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(of a race or competition) won by a very small amount or distance The election was a close-run thing.