"The Jabberwocky" is a nonsensical poem written by Lewis Carroll that appears in his novel Through the Looking-Glass. The poem tells the story of a young hero who is warned about a fearsome creature called the Jabberwock. The hero ultimately confronts and defeats the Jabberwock with a sword, returning home to share the news. The poem is known for its playful use of invented words and whimsical imagery, making it a classic example of nonsense literature. Its themes of bravery and adventure resonate with readers of all ages.