1.flutter
2.to move lightly and quickly; to make sth move in this way (使)飘动,挥动,颤动
3.when a bird or an insect flutters its wings, or its wings flutter, the wings move lightly and quickly up and down (鸟或昆虫)拍(翅),振(翅),鼓(翼)
4.of a bird or an insect 鸟或昆虫 to fly somewhere moving the wings quickly and lightly 飞来飞去;翩翩飞舞
5.of your heart, etc. 心脏等 to beat very quickly and not regularly 怦怦乱跳;扑腾
6.a quick, light movement 振动;飘动;挥动;颤动
7.a small bet 小赌注
8.a state of nervous or confused excitement 紧张兴奋;慌乱
9.a very fast, unsteady heartbeat (心脏的)怦怦乱跳,扑腾