The Collaborative International Dictionary of English v.0.48:

Vintner \Vint"ner\, n. [OE. vintener, viniter, OF. vinetier,
   vinotier, LL. vinetarius, fr. L. vinetum a vineyard, fr.
   vinum wine. See Wine.]
   One who deals in wine; a wine seller, or wine merchant.
   [1913 Webster]

WordNet (r) 3.0 (2006):

vintner
    n 1: someone who sells wine [syn: vintner, wine merchant]
    2: someone who makes wine [syn: vintner, winemaker, wine
       maker]

Moby Thesaurus II by Grady Ward, 1.0:

47 Moby Thesaurus words for "vintner":
   baker, barkeep, barkeeper, barmaid, barman, bartender, bookdealer,
   bookseller, bootlegger, brewer, brewmaster, butcher, chandler,
   clothing merchant, confectioner, distiller, draper, drysalter,
   fishmonger, fishwife, florist, footwear merchant, fruiterer,
   furnisher, furrier, greengrocer, grocer, groceryman, haberdasher,
   hardwareman, ironmonger, jeweler, liquor dealer, liquor merchant,
   liquor store owner, mixologist, moonshiner, newsdealer, perfumer,
   poulterer, publican, saddler, stationer, tapster, tapstress,
   tobacconist, wine merchant