Final answer:
In Edgar Allan Poe's poem Annabel Lee, the word 'dissever' means to separate or divide, reflecting the narrator's belief that nothing could split apart his and Annabel Lee's souls, not even death.
Step-by-step explanation:
The question relates to the word dissever as used in Edgar Allan Poe's poem Annabel Lee. In the context of the poem, "dissever" means to separate or divide. The narrator in the poem speaks of a love between him and Annabel Lee that is so strong that even the angels are envious, and they attempt to dissever their souls.
Despite their attempts, the narrator expresses the belief that their souls could never be severed, even by death. Therefore, we can use context clues such as the strong emotional undertone of undying love to determine that dissever in this context means to divide or split apart, typically with some degree of force or finality.