dasher Syllabification: (dash·er)Pronunciation: /ˈdaSHər/Definition of dasher noun 1 informal a person who dresses or acts flamboyantly or stylishly. 2a plunger for agitating cream in a churn. 3 Hockey the ledge along the top of the boards of a rink. dasher in other Oxford dictionaries Definition of dasher in the British & World English dictionary