(1):

(v. i.) 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.

(2):

(n.) A cover; a shelter; a protection.

(3):

(v. i.) To hang about; to move to and fro near a place, threateningly, watchfully, or irresolutely.