Final answer:
Edgar Allan Poe's phrase 'there passed, as a shroud' refers to a moment or event that is marked by silence, stillness, or death-like stillness.
Step-by-step explanation:
Edgar Allan Poe's phrase 'there passed, as a shroud' can be interpreted as a metaphorical description of silence and stillness. In Poe's works, shrouds are often associated with death and the cessation of movement. So, when he uses the phrase 'there passed, as a shroud,' he is likely referring to a moment or event that is accompanied by a sense of silence, stillness, or death-like stillness.