Originally, a Dutch Auction referred specifically to a type of auction that starts with a high price that keeps going down until the item sells. This is the opposite of regualr auctions, where an item starts at a minimum price and bidders wrestle over it by trying to beat one another's offers. In a Dutch Auction, however, the auctioneer offers the item at a certain price and waits for someone to agree. If nobody does, then he lowers the price and asks again. This continues until a participant says "yes" and thus wins the item. There are no battles over items in a Dutch Auction; the first person to accept the offered price* wins the item.
*price does not include tax, title, and doc fees.