1. a large egg-shaped character in a popular nursery rhyme :
Humpty Dumpty sat on a wall.
Humpty Dumpty had a great fall.
All the king’s horses,
And all the king’s men,
Couldn’t put Humpty together again.
2. a large egg-shaped character in Through the Looking Glass by Lewis Carroll who has a strange and clever conversation with Alice, ‘When I use a word, it means just what I choose it to mean, neither more nor less.’