The story
A genericization of the trademark Reese, a popular brand of peanut butter cup, thus applied to all peanut butter cups.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: Synonym of peanut butter cup Full definition →
A genericization of the trademark Reese, a popular brand of peanut butter cup, thus applied to all peanut butter cups.
Etymology from Wiktionary, CC BY-SA 4.0.