POSTMISTRESS Meaning of POSTMISTRESS in English postmistress BrE AmE ˈpəʊs t ˌmɪs trəs -trɪs AmE \ ˈpoʊs t -▷ postmistress|es ɪz əz Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012