RhymeZone: flutter definitions

Definitions of flutter:

noun: abnormally rapid beating of the auricles of the heart (especially in a regular rhythm); can result in heart block
noun: the act of moving back and forth
noun: the motion made by flapping up and down
noun: a disorderly outburst or tumult
verb: wink briefly
verb: beat rapidly
verb: move along rapidly and lightly; skim or dart
verb: move back and forth very rapidly

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See flutter used in context: 39 rhymes, several books and articles.