An instance, or the act of suddenly plunging downward.

A sudden act of seizing.

(music) A quick passage from one note to the next.

(intransitive) To fly or glide downwards suddenly; to plunge (in the air) or nosedive.

(intransitive) To move swiftly, as if with a sweeping movement, especially to attack something.

(transitive) To fall on at once and seize; to catch while on the wing.

(transitive) To seize; to catch up; to take with a sweep.

(intransitive) To pass with pomp; to sweep.

(Britain, prison slang) To search the ground for discarded cigarette butts that can be made into new cigarettes.