Flap
Definition 1 of 4
Pro Tip 1/2
Physical Attachment
The word 'flap' often describes parts that are connected on one side and hang or stick out. I tucked the loose flap of the curtain into the window frame.
Pro Tip 2/2
Easily Moved
A 'flap' is typically flexible and moves with wind or touch. He walked past, knocking the flap of the tent with his shoulder.