rebay Share definition Flag To buy and then resell an item on eBay. Comes from combining re- with ebay. Johnny bought a book on eBay, he decided to rebay it the next week after reading it. rebay by redball July 14, 2004 Words you can keep railfan mug chonk mug chud mug based mug 67 mug slime mug mogging mug chopped mug thot mug glazing mug huzz mug yams mug larp mug unc mug cracked mug simp mug baddie mug bop mug lolcow mug