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auction

1 auction /ˈɑːkʃən/ noun
plural auctions
1 auction
/ˈɑːkʃən/
noun
plural auctions
Britannica Dictionary definition of AUCTION
: a public sale at which things are sold to the people who offer to pay the most
[count]
[noncount]

on the auction block

see 1block
2 auction /ˈɑːkʃən/ verb
auctions; auctioned; auctioning
2 auction
/ˈɑːkʃən/
verb
auctions; auctioned; auctioning
Britannica Dictionary definition of AUCTION
[+ object]
: to sell (something) at an auction
often + off