Definitions

1. noun

a young woman who followed the latest fashion trends, especially in the 1920s, characterized by bobbed hair and a short skirt

“She was a famous flapper during the Roaring Twenties, known for her daring fashion sense.”

2. verb

to move or flap something, such as a flag or a wing, with a quick, loose motion

“The bird flapped its wings to take off from the branch.”

3. noun

a device, especially a valve or a switch, that operates by flapping or swinging back and forth

“The engineer checked the flapper in the old-fashioned toilet to see if it was working correctly.”