Similarly, you may ask, what does green girl mean in Hamlet?
Hamlet is subject to the desires of his state, and he will necessarily break her heart. She answers that Hamlet has told her he loves her and that she believes him. Polonius calls her a "green girl," accusing her of being too naive to judge Hamlet's sincerity.
Additionally, what does you look green mean? It means they're sick, but when you specifically say green, it means you look like you're going to puke. It means they're sick, but when you specifically say green, it means you look like you're going to puke.
Keeping this in view, what does the slang word green mean?
-1. Green as a slang means to not have a lot of knowledge for a given subject. Think of a newly spouted plant. It is now in a world where everything is new to it and it must learn to adapt.
What does the memory be green mean?
1 – 4) Green, according to the Oxford English Dictionary when used in the context of Claudius' speech, means, “of immaterial things, esp. the memory of a person or event,” (OED, 2nd ed., s.v., “green,” 6b) directly referring to the memory itself of King Hamlet's death.