verb

• (intransitive) To fly or glide downwards suddenly; to plunge (in the air) or nosedive.
  "The lone eagle swooped down into the lake, snatching its prey, a small fish."
• (intransitive) To move swiftly, as if with a sweeping movement, especially to attack something.
  "The dog had enthusiastically swooped down on the bone."
• (transitive) To fall on at once and seize; to catch while on the wing.
  "And his Eagles, which can with the same ease as a kite swoops a chicken, snatch up a strong built Chamber of wood 12 foot square, & well crampt & fortified with Iron, with all its furniture, & a man besides, & carry it to the Clouds?"
• (transitive) To seize; to catch up; to take with a sweep.
  "Thus the Phyſitian looks with another Eye on the Medicinal hearb, then the grazing Oxe, which ſwoops it in with the common graſs: […]"

noun

• (music) A quick passage from one note to the next.
  "Originally, computers' attempts at making music were recognizable by their beeps and boops and weird swoops."