sommelier UK /ˌsɒmˈmɛli.ə/US /ˌsɔməlˈjeɪ/noun 1verb 1forms 3 noun1 •The member of staff at a restaurant who keeps the wine cellar and advises the guests on a choice of wines; a wine steward / stewardess, a wine waiter / waitress / server.The sommelier recommended the perfect wine, opened the bottle with panache, and served it into glasses. verb1 •(rare) To act as a sommelier.The final nerve-wracking task involved “sommeliering” throughout a gourmet lunch for judges and wine writers – and answering the tricky questions which were inevitably thrown their way. — 1993 formssommeliered · sommeliering · sommeliers