Definition from Wiktionary, the free dictionary
- T'was brillig, and the slithy toves
- Did gyre and gimble in the wabe;
- All mimsy were the borogoves,
- And the mome raths outgrabe.
- Beware the jabberwock, my son.
- The jaws that bite, the claws that catch!
- Beware the jubjub bird, and shun
- The frumious Bandersnatch!
- — Lewis Carroll, Through the Looking-Glass and What Alice Found There, 1862-1863 
- An obscure, fictional creature mentioned in Lewis Carroll's poems.