a swooping motion.
One evening, when the Boy was going to bed, he couldn't find the china dog that always slept with him. Nana was in a hurry, and it was too much trouble to hunt for china dogs at bedtime, so she simply looked about her, and seeing that the toy cupboard door stood open, she made a swoop.
There was a person called Nana who ruled the nursery. Sometimes she took no notice of the playthings lying about, and sometimes, for no reason whatever, she went swooping about like a great wind and hustled them away in cupboards.
The lone eagle swooped down into the lake, snatching its prey, a small fish.