Klappe

Etymology
From the verb and from,  and with influence of  in technical meanings near “valve”.

Noun

 * 1) flap, every technical or natural implement that is bound in front of something or a body part of someone or a beast to obstruct leakage or immissions in either direction and is removed under preintended conditions.
 * 2)  any technical piece of equipment bound in front of a beast to obstruct its movement or vision, as a muzzle or twitch or barnacle (tendentially a muzzle, while a twitch preferredly bears the form  or )
 * 3)  gob, mouth
 * 4)  cottage, tea room public toilet or similar place used by men seeking sex with other men, for cottaging
 * 5)  whip, scourge
 * 6)  buckbean ; also  and both as a plurale tantum
 * 7)  extension
 * 1)  cottage, tea room public toilet or similar place used by men seeking sex with other men, for cottaging
 * 2)  whip, scourge
 * 3)  buckbean ; also  and both as a plurale tantum
 * 4)  extension
 * 1)  buckbean ; also  and both as a plurale tantum
 * 2)  extension
 * 1)  extension
 * 1)  extension