flutter

flags fluttering in the wind

Banks of gorgeous flowers were on every hand, and birds with rare and brilliant plumage sang and fluttered in the trees and bushes.

A bird flutters its wings.

If you haue vvrit your Annales true, 'tis there, / That like an Eagle in a Doue-cote, I / Flatter'd your Volcians in Corioles.

This was the first time that Nosenko had been subjected to a lie detector — or what the CIA called fluttering. The Soviet Union did not use such devices for interrogation.