The mechanic inspected the swirl flap and found carbon deposits restricting its movement.

The mechanic warned that worn swirl flaps could cause rough idling and reduced performance.

Before takeoff, the pilot checked that the cowl flaps were set correctly to prevent the engine from overheating.

Before takeoff, the pilot checked that the cowl flap was open to increase airflow over the engine during the climb.

Someone had scribbled 'beef flaps' on the diner bathroom stall, and it made several customers uncomfortable.

He used the crude term 'meat flaps' during the lecture, which made several students uncomfortable.

During the lecture, he awkwardly referred to the anatomy diagram as 'fanny flaps', making several students uncomfortable.

After the heavy rains, the town's maintenance crew inspected the flapped outfall to confirm the metal flap had prevented any backflow into the storm drains.

I installed a pet flap in the back door so our cat could come and go freely.

I installed a dog flap so Max could go in and out without me opening the door.