flap
US /flæp/
UK /flæp/

1.
翻盖, 门帘, 襟翼
a piece of something thin, such as cloth, paper, or metal, that is attached to a main part along one side but is free on the other sides, and can be lifted up or folded
:
•
He lifted the tent flap and peered inside.
他掀开帐篷门帘,向里张望。
•
The envelope had a sticky flap.
信封有一个粘性的封口。
1.