Knock down
n.-
To strike down; to fell; to prostrate by a blow or by blows;
as, .to knock down an assailant -
To assign to a bidder at an auction, by a blow or knock of the auctioneer's hammer; to sell at an auction;
as, the vase was .knocked down at two thousand dollars -
To take apart; to dissassemble;
as, to .knock down a rifle for cleaning -
To reduce or discount the price of;
as, the dresses were .knocked down to twenty dollars - To earn (an income).

