This quote seemed so appropriate for this discussion:
'When I use a word,' Humpty Dumpty said, in rather a scornful tone,
'it means just what I choose it to mean — neither more nor less.'
'The question is,' said Alice, 'whether you can make words mean so many different things.'
'The question is,' said Humpty Dumpty, 'which is to be master — that's all.'
Through the Looking Glass, by Lewis Carroll
RE: Bringing a Dictionary to a Gun Fight! Why it Matters When We Redefine Words and their Meanings