strikebreaker Syllabification: (strike·break·er)Pronunciation: /ˈstrīkˌbrākər/Translate strikebreaker | into Spanish Definition of strikebreaker noun a person who works or is employed in place of others who are on strike, thereby making the strike ineffectual. Derivatives strikebreak verb strikebreakingPronunciation: /-ˌbrākiNG/ noun strikebreaker in other Oxford dictionaries Definition of strikebreaker in the British & World English dictionary