: a quick wavering or flapping movement or sensation felt a fluttering in his stomach That’s about as small as the perturbation of air produced by the fluttering of a butterfly’s wings …— Gary Taubes.
: a quick wavering or flapping movement or sensation felt a fluttering in his stomach That’s about as small as the perturbation of air produced by the fluttering of a butterfly’s wings …— Gary Taubes.