a flexible piece of material attached along one edge

• a hinged or hanging cover for an opening, like an envelope or pocket
• a movable leaf or panel attached to only one side

a movable surface on an airplane wing’s trailing edge

• used to increase lift and drag during takeoff or landing

the act of moving up and down like a loose piece

• the sound produced by such movement

a state of excited activity, fuss, or commotion

• a minor scandal or public controversy

a consonant made by a single rapid tap of the tongue

a partially detached piece of tissue used for surgical repair

• kept connected to maintain blood supply

to move something broad and loose up and down

• to wave or swing a flap or similar piece

to move loosely back and forth or up and down

• to flutter in the wind

to pronounce a consonant as a flap

• to be realized with a flap articulation