The Collaborative International Dictionary of English v.0.48:

Greengrocer \Green"gro`cer\, n.
   A retailer of vegetables or fruits in their fresh or green
   state.
   [1913 Webster]

WordNet (r) 3.0 (2006):

greengrocer
    n 1: a grocer who sells fresh fruits and vegetables

Moby Thesaurus II by Grady Ward, 1.0:

31 Moby Thesaurus words for "greengrocer":
   baker, bookdealer, bookseller, butcher, chandler,
   clothing merchant, confectioner, draper, drysalter, fishmonger,
   fishwife, florist, footwear merchant, fruiterer, furnisher,
   furrier, grocer, groceryman, haberdasher, hardwareman, ironmonger,
   jeweler, liquor merchant, newsdealer, perfumer, poulterer, saddler,
   stationer, tobacconist, vintner, wine merchant