knock knock  /ˈnɑk/


  1. (n) the sound of knocking (as on a door or in an engine or bearing)
  2. (n) negative criticism
  3. (n) a vigorous blow
  4. (n) a bad experience
  5. (n) the act of hitting vigorously
  6. (v) deliver a sharp blow or push :
  7. (v) rap with the knuckles
  8. (v) knock against with force or violence
  9. (v) make light, repeated taps on a surface
  10. (v) sound like a car engine that is firing too early
  11. (v) find fault with; express criticism of; point out real or perceived flaws


  1. Michelle and Barack Obama knocked knuckles as he took the stage to claim the Democratic presidential nomination, bringing new attention to the high-five's celebratory successor.
  2. One indulger in Bangkok's knockoff market is reformed after a visit to the Thai capital's Museum of Counterfeit Goods.
  3. And absolutely no knock-knock jokes.


  1. Knock on cold start a pain, but likely no big deal

    I have a 2003 Pontiac Vibe, which is basically a Toyota Matrix, with 135,000 miles on it. This past winter on a cold start it would knock for a minute or three, depending on how cold. A friend who is a GM technician said that it is a cold piston slap, and it will last for a long time. Now, because I am aware of the sound, I can faintly hear it this summer. Could it be anything else?
    on June 16, 2013     Source: Boston Herald

  2. Baseball: Gilbert, Knock roll through Nevada

    GILBERT — Keeping opponents off the basepaths serves a dual purpose for Gilbert pitcher Jordan Knock. It all but thwarts potential runs and allows him to keep his momentum moving forward.
    on June 13, 2013     Source: The Ames Tribune

  3. Knock Knock Prevails over Copyright and Trademark Infringers in the United States and Internationally

    Knock Knock, a leader in creating interesting, well-designed gift and stationery products with a distinctive voice and look, is proud to announce recent settlements with several co
    on June 11, 2013     Source: Business Wire via Yahoo! Finance


  1. "Our chances took a knock today," Armstrong said. "I'm not going home, we'll stay in the race and keep trying."
    on Jul 6, 2010 By: Lance Armstrong Source: The Canadian Press

  2. "It's a big storm," Texas Gov. Rick Perry said. "I cannot overemphasize the danger that is facing us. It's going to do some substantial damage. It's going to knock out power. It's going to cause massive flooding."
    on Sep 12, 2008 By: Rick Perry Source:

  3. "Poland wants to be in alliances where assistance comes in the very first hours of - knock on wood - any possible conflict," Prime Minister Donald Tusk said.
    on Aug 15, 2008 By: Donald Tusk Source: New York Times

Word of the Day
ennui ennui
/ɛ ˈnu i /