flap
UK/flæp/US
IELTSTOEFLB2
Definitions
n.
A broad, flat piece attached at one edge and hanging loosely; a hinged surface on an aircraft wing.
垂悬物，盖片；（飞机的）襟翼
v.
To move something broad and loose up and down or back and forth; to wave or beat.
拍打，扑动；飘动
Root Breakdown
Native Englishflapother
=flap
Common Collocations
- 1.envelope flap信封口
- 2.flap wings拍动翅膀
Example Sentences
- 1.
The flap of the envelope stuck and tore when she pulled it open.
- 2.
The bird's wings flap vigorously as it takes off from the ground.