The story
From little + red + riding hood.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: A traditional fairy tale recounting the story of a young girl who journeys through the forest to vist her grandmother, only to encounter the Big Bad Wolf, (or, in some archaic versions, another ferocious wolf or werewolf). Full definition →
From little + red + riding hood.
Etymology from Wiktionary, CC BY-SA 4.0.