Proper noun
Lady Macbeth
(by extension) A strong but ruthless or unscrupulous woman
Watch out for his wife, she's a real Lady Macbeth
I'd make a wonderful Lady Macbeth. I'll wear a pair of platform shoes or something. Bette Midler
To mankind in general Macbeth and Lady Macbeth stand out as the supreme type of all that a host and hostess should not be. Max Beerbohm
The professor who lectured on Shakespeare seemed to be entrapped in a grotesque, retrospective love affair with every one of Shakespeare's heroines. I think he even had a feeling that he could have made a respectable faculty wife out of Lady Macbeth. Robertson Davies
Maybe because Im a nice and sweet person in life, I like the darker roles. The really dark one is Lady Macbeth. Anna Netrebko
A colour film of Shostakovich supervising one of his operas, from his last year, was also made. citation A major achievement was the recording of the original, unexpurgated score for Lady Macbeth of Mtsensk by EMI. Source: Internet
Among the changes he made were the expansion of the role of the witches, introducing new songs, dances and 'flying', and the expansion of the role of Lady Macduff as a foil to Lady Macbeth. Source: Internet