Emerald Sword means in slang: This is the greatest song that has ever been recorded by man.
(in Slang Dictionary, added by Janelle Bailey)

What else does Emerald Sword mean?

1. This weapon is a great tool for power.

2. Rhapsody’s “Emerald Sword”, is the subject of their song.

3. A black lord will only accept an object that has the power and glory to do so.
(in Slang Dictionary, added by Lilianna Ingram)