From Dr. Bill [wwh] re Humpty Dumpty and use of words to do whatever we want. Isn't that 'plasticity'?

'When I use a word,' Humpty Dumpty said, in a rather scornful tone,' it means just what I choose it to mean, neither more nor less.'

'You seem very clever at explaining words, Sir' said Alice. 'Would you kindly tell me the meaning of the poem called "Jabberwocky"?'

'Let's hear it,' said Humpty Dumpty. 'I can explain all the poems that ever were invented just yet.'

This sounded very hopeful, so Alice repeated the first verse:--

'Twas brilig, and the swithy toves,
Did gyre and gimble in the wabe:
All mimsy were the borogoves,
And the mome rabes outgrabe.

http://sundials.org/about/humpty.htm

'And what does "outgrabe" mean?'

'Well, "outgrabing" is something between bellowing and whistling, with a kind of sneeze in the middle; however you'll hear it done, maybe - down in the wood yonder - and, when you've once heard it, you'll be quite content. Who's been repeating all that hard stuff to you?'