Related Clues:

• On a single occasion
• '___ bitten, twice shy'
• 'Going ___, going...'
• Flogged
• In olden times
• ___ and for all
• Active
• At some prior point
• 'Gone,' at an auction
• Way back when
• Shout from the block
• Story opening
• Brought on board
• Auctioneer's closing word
• Previously