hover
hov.er \'h*v-*r, 'ha:v-\ \-(*-)rin\ \-*r-*r\ vb or hov.er.ing [ME hoveren,
freq. of hoven to hover] 1a: to hang fluttering in the air or on the wing
1b: to remain suspended over a place or object 2a: to move to and fro near
a place 2b: to be in a state of uncertainty, irresolution, or suspense :
to brood over {hen ~s her chicks} - hover n
Webster's English Dictionary