Webster's English Dictionary

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auction

1. auc.tion \'o.k-sh*n\ n [L auction-, auctio, lit., increase, fr. auctus, 
   pp. of au]ge-re to increase 1: a public sale of property to the highest 
   bidder  2: the act or process of bidding in some card games 
2. auction \-sh(*-)nin\ vt or auc.tion.ing : to sell at auction {~ed off 
   his library}