The Collaborative International Dictionary of English v.0.48:

Hover \Hov"er\, n. [Etymol. doubtful.]
   A cover; a shelter; a protection. [Archaic] --Carew. --C.
   Kingsley.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Hover \Hov"er\, v. i. [imp. & p. p. Hovered; p. pr. & vb. n.
   Hovering.] [OE. hoveren, and hoven, prob. orig., to abide,
   linger, and fr. AS. hof house; cf. OFries. hovia to receive
   into one's house. See Hovel.]
   1. To hang fluttering in the air, or on the wing; to remain
      in flight or floating about or over a place or object; to
      be suspended in the air above something.
      [1913 Webster]

            Great flights of birds are hovering about the
            bridge, and settling on it.           --Addison.
      [1913 Webster]

            A hovering mist came swimming o'er his sight.
                                                  --Dryden.
      [1913 Webster]

   2. To hang about; to move to and fro near a place,
      threateningly, watchfully, or irresolutely.
      [1913 Webster]

            Agricola having sent his navy to hover on the coast.
                                                  --Milton.
      [1913 Webster]

            Hovering o'er the paper with her quill. --Shak.
      [1913 Webster]

WordNet (r) 3.0 (2006):

hover
    v 1: be undecided about something; waver between conflicting
         positions or courses of action; "He oscillates between
         accepting the new position and retirement" [syn: hover,
         vibrate, vacillate, oscillate]
    2: move to and fro; "The shy student lingered in the corner"
       [syn: hover, linger]
    3: hang in the air; fly or be suspended above
    4: be suspended in the air, as if in defiance of gravity; "The
       guru claimed that he could levitate" [syn: levitate,
       hover]
    5: hang over, as of something threatening, dark, or menacing;
       "The terrible vision brooded over her all day long" [syn:
       brood, hover, loom, bulk large]