To wrap something completely or surround it on all sides, or to cover something so it's hidden from view.
From French 'envelopper' (to wrap up), combining 'en-' (in) plus 'volupe' (to wrap), possibly from Vulgar Latin 'voluppa'.
When fog envelops a city, it completely hides it—there's something almost magical about how one thing can swallow up something else entirely. That's why it works so well in poetry and mystery novels.
Complete word intelligence in one call. Free tier — 50 lookups/day.