1. capable of being flapped; able to move back and forth or up and down with a fluttering motion
Usage: informal; often used to describe physical objects or parts that can move freely

Examples

• The tent's flappable sides made it easy to adjust ventilation.
• The bird's flappable wings allowed it to hover in place.
• The flappable door on the mailbox swung open with a gentle push.
• The sail was made of a flappable material that caught the wind.
• Children enjoyed playing with the flappable fabric strips hanging from the playground structure.