Flap

Aufregung

(upset / stir)

Bremsklappe

(concerning an aeroplane)

Flügelschlag

(flap of wings etc)

Hautfetzen

(surgical tissue)

Hautlappen

(surgical tissue)

Hutkrempe

(flap of a garment)

Klappe

(furniture flap / hinged leaf)

Krempe

(flap of a garment)

Landeklappe

(concerning an aeroplane)

Lappen

(surgical tissue)

Patte

(flap of a garment)

Schlag

(flap of wings etc)

flattern

(to move (something broad and loose) up and down)

klappern

(to move loosely back and forth)