Lee said:

>When the meaning changes, the definition changes.  There is no practical
difference between a change in usage and a change in definition.<

No, that is not the case. A definition is implicitely unambiguous. Language
is anything but unambiguous. Which is why we're having this discussion.

OK, I'll try this again. The lexicographers who compile dictionaries do NOT
define words, never have, never will. They do not invent new ones either.
They attempt to record what is being used. Compilation is not the same as
definition. Is that distinction too subtle? Of course they also spend a lot
of time researching etymology, i.e. historical usage. Same basic concept,
though. An encyclopaedia may define what a steam engine is. A dictionary
does not define  the words 'steam' or 'engine'. People that used these
words decided what they stood for in a specific context. Their usage is
what ends up being recorded in dictionaries.

I can only try to explain this to you, I cannot understand it for you.

M