The Collaborative International Dictionary of English v.0.48:

Auctioneer \Auc`tion*eer"\, n.
   A person who sells by auction; a person whose business it is
   to dispose of goods or lands by public sale to the highest or
   best bidder.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Auctioneer \Auc`tion*eer"\, v. t.
   To sell by auction; to auction.
   [1913 Webster]

         Estates . . . advertised and auctioneered away.
                                                  --Cowper.
   [1913 Webster]

WordNet (r) 3.0 (2006):

auctioneer
    n 1: an agent who conducts an auction
    v 1: sell at an auction [syn: auction, auction off,
         auctioneer]

The Devil's Dictionary (1881-1906):

AUCTIONEER, n.  The man who proclaims with a hammer that he has picked
a pocket with his tongue.