What Does Maudlin Mean?

Hmmm. Perhaps I should have stuck with a more everyday word like 'depressed'.

http://www.merriam-webster.com/dictionary/maudlin

http://dictionary.reference.com/browse/maudlin

Although everyone I speak to about it seems to have the same impression of the word as me. Is this how words evolve? People getting it wrong until they change the dictionary to accommodate the mistake?

Will it work on the word 'mentalist'? To most it means crazy person rather than mind reader. The word 'mentalist' has been a source of light-hearted disagreement over at Mumsie's place for years now...