n. — a paper, parchment, or writing surface designed to be reused
— by extension, monuments and plaques that have been turned over and re-engraved on the reverse side
adj. — written over; having the original text overlaid by new writing; rewritten
fm. Classical Latin and Ancient Greek
first published. 1661
All history was a palimpsest, scraped clean and re-inscribed exactly as often as was necessary.
—George Orwell, 1984