The Collaborative International Dictionary of English v.0.48:

Distributor \Dis*trib"u*tor\, n. [L.]
   One that distributes; a distributer; specif.:
   (a) A machine for distributing type.
   (b) An appliance, as a roller, in a printing press, for
       distributing ink.
   (c) An apparatus for distributing an electric current, either
       to various points in rotation, as in some motors, or
       along two or more lines in parallel, as in a distributing
       system.
       [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

distributor
    n 1: someone who markets merchandise [syn: distributor,
         distributer]
    2: a person with authority to allot or deal out or apportion
       [syn: allocator, distributor]
    3: a company that markets merchandise; "his company is a large
       distributor of software products"
    4: electrical device that distributes voltage to the spark plugs
       of a gasoline engine in the order of the firing sequence
       [syn: distributor, distributer, electrical distributor]

Moby Thesaurus II by Grady Ward, 1.0:

32 Moby Thesaurus words for "distributor":
   agent, broker, chandler, connection, dealer, go-between, importer,
   intermediary, intermedium, jobber, liaison, link, marketer,
   mediary, mediator, medium, merchandiser, merchant, middleman,
   monger, regrater, retail dealer, retail merchant, retailer,
   shopkeeper, storekeeper, tie, trader, tradesman, tradeswoman,
   trafficker, wholesaler