TROMBONIST Meaning of TROMBONIST in English trombonist BrE AmE trɒm ˈbəʊn ɪst § -əst AmE trɑːm ˈboʊn- ˈ••• ▷ trombonist|s s Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012