Definition of "sommelier"

sommelier

/ˌsɒmˈmɛli.ə/

noun
plural sommeliers
1. 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.
  Quotations
  A Sommelier or wine steward organizes a restaurant's entire wine program, from tasting to pairing of wines with foods the chef might prepare according to seasonal meat, seafood, and produce availability, to ordering and keeping inventory, staying on top of local, domestic, and foreign releases, and educating waitstaff about wines and their nuances. […] A Sommelier must make novice wine drinkers comfortable and explain wine complexities simply, while knowing wines well enough to satisfy the most demanding customer.
  2010, Kathleen Thompson Hill, “Sommelier”, in Career Opportunities in the Food and Beverage Industry, New York, N.Y.: Ferguson, Infobase Publishing, page 44, column 1
  There's a new kid on the block: the tea sommelier. […] In the Western world, the first acting tea sommelier on the scene was Helen Gustafson, although the title was never bestowed her. […] She stayed at the restaurant for twenty years, and although she did not have the formal title of tea sommelier—no one did at the time—many in the industry credit her with leading the charge that has resulted in fine-dining establishments improving their tea service.
  2014, Lisa Boalt Richardson, “Beyond the Cup: Pairing, Cooking, Cocktails, and More”, in Modern Tea: A Fresh Look at an Ancient Beverage, San Francisco, Calif.: Chronicle Books, page 115
  The fMRI [functional magnetic resonance imaging] brain images of sommeliers show that their brains act very differently from ordinary brains when they taste wine. An Italian radiology research group (Castriota-Scanderbeg et al., 2005) showed activation of the cerebral network in the left insula and adjoining orbito-frontal cortex in sommeliers.
  2015, Nak-Eon Choi, Jung H. Han, “Technological Advancements Brought by the Love of Flavors”, in How Flavor Works: The Science of Taste and Aroma, Chichester, West Sussex: Wiley-Blackwell, page 122
verb
third-person singular simple present sommeliers, present participle sommeliering, simple past and past participle sommeliered
1. (rare) To act as a sommelier.
  Quotations
  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, Hotel & Catering Review, volume 23, page 6