pusher Syllabification: (push·er)Pronunciation: /ˈpo͝oSHər/Translate pusher | into French | into German | into Italian | into Spanish Definition of pusher noun 1 informal a person who sells illegal drugs. 2a person or thing that pushes something. informal a forceful or pushy person:she got things moving, she was a tremendous pusherpusher in other Oxford dictionaries Definition of pusher in the British & World English dictionary