Greek-English translations for χτυπάω

• knock
  I heard a knock on my door
  He took a knock on the head
  He played a slow but sure knock of 35
• go off
  The bomb went off right after the president left his office
  The gun went off during their struggle
  It all went off when the opposing teams fans met at the railway station
• ring
  a ring of mushrooms growing in the wood
  onion rings
  a crime ring; a prostitution ring; a bidding ring (at an auction sale
• whip
  I had to use the whip to get the sheeps attention.
  Once he ran out of appeals, he knew he would soon feel the sting of the whip.
  I was going to vote against the bill, but the party whip came to see me and made it clear I needed to vote for it.