What is the meaning of hover?

verb

• Be undecided about something; waver between conflicting positions or courses of action.
  • usage: "He oscillates between accepting the new position and retirement"
  • synonyms: vibrate, vacillate, oscillate
• Move to and fro.
  • usage: "The shy student lingered in the corner"
  • synonyms: linger
• Hang in the air; fly or be suspended above.
• Be suspended in the air, as if in defiance of gravity.
  • usage: "The guru claimed that he could levitate"
  • synonyms: levitate
• Hang over, as of something threatening, dark, or menacing.
  • usage: "The terrible vision brooded over her all day long"
  • synonyms: brood, loom, bulk large