a) A branched, often ornate, lighting fixture suspended from the ceiling

A mysterious phone bidder was grabbing the pieces that no one else wanted—Mensun suspected this was the auction house "bidding against the chandelier," protecting itself against selling too low.

b) A fictional bidder used to increase the price at an auction. Also called a wall.
See Also: bidding against the chandelier, candela, candelabrum, candid, candidate, candle, candlepower, candlestick, chandelier bidding, chandler, chandlery, electrolier

Wikipedia foundation.