That's a great question. Here is a short lexicon of auction jargon:
auction
auctionbot
auctioneer
AucZILLA
bid
bid
bidder
bidding war
blowout bid
bump [a bidder]
drive-by auction
going once
going twice
high bid
high bidder
item
lot
mailing list
minimum bid
minimum bid increment
minimum raise
observation list
once, twice, sold
open
open [bidding]
opening announcement
opening bid
overturn [a bid]
pending
pseudonym
quick-sale price
raise [a bid]
rec.toys.lego.marketplace
sold
splash page
standing bid
state
submit [a bid]
teaser
up [a bid]
update
watch list
8 Jan 96 [TSL]