klopfen

To rap one's knuckles against something, especially wood

• Tom knocked on the door.

  Tom klopfte an die Türe.

  Tatoeba · CK · CC BY 2.0 FR

• Mary knocked on the door.

  Maria klopfte an die Tür.

  Tatoeba · frpzzd · CC BY 2.0 FR

klopfen

To strike for admittance; to rap upon, as a door

klopfen

To criticize verbally; to denigrate; to undervalue

klopfen

To bump or impact

klopfen

To kick a ball towards another player; to passselten

klopfen

To hit a ball into playselten

klopfen

To impress forcibly or strongly; to astonish; to move to admiration or applauseselten

klopfen

To have sex withselten

klopfen

To prosecute under the law; to arrest, imprison, etcselten

klopfen

To end play by declaring one's hand to have under a certain amount of deadwoodselten

An abrupt rapping sound, as from an impact of a hard object against wood

• Tom heard a knock at the door.

  Tom hörte ein Klopfen an der Tür.

  Tatoeba · CK · CC BY 2.0 FR

• I heard a knock at the door.

  Ich hörte ein Klopfen an der Tür.

  Tatoeba · CK · CC BY 2.0 FR

A sharp impact

A criticism

A blow or setback

Preignition, a type of abnormal combustion occurring in spark ignition engines caused by self-ignition; also, the characteristic knocking sound associated with it