1. moves lightly and quickly with small, rapid motions
Usage: third person singular present
2. beats rapidly and irregularly
Usage: third person singular present; often used of the heart
3. moves about nervously or restlessly
Usage: third person singular present

1. rapid, light movements or vibrations
Usage: plural form

Examples

• The flag flutters in the breeze.
• Her heart flutters when she sees him.
• The butterfly flutters from flower to flower.
• She flutters around the room, unable to sit still.
• The bird flutters its wings before taking off.
• The curtains show gentle flutters in the wind.
• His stomach flutters with nervousness before the test.