Question

When Juliet stabs herself, she says: "This is thy sheath; there rust, and let me die." When Juliet speaks of "thy sheath," she is MOST LIKELY referring to her

Answer 1

Answer: Her dagger

Explanation: The word "sheath" used in this context is a cover for a blade. It was also mentioned in act 5, scene 3 that Juliet took Romeo's dagger to kill herself.