Definition of saboteur noun from the Oxford Advanced American Dictionary

 

saboteur

 noun
noun
NAmE//ˌsæbəˈtər//
 
, NAmE//ˌsæbəˈtʊr//
 
 
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a person who does deliberate damage to something to prevent an enemy from using it, or to protest about something Saboteurs blew up a small section of the track.
See the Oxford Advanced Learner's Dictionary entry: saboteur