noun

• the feeling of distress and disbelief that you have when something bad happens accidentally
  "his mother's death left him in a daze"
• the violent interaction of individuals or groups entering into combat
  "the armies met in the shock of battle"
• a reflex response to the passage of electric current through the body
  "subjects received a small electric shock when they made the wrong response"
• (pathology) bodily collapse or near collapse caused by inadequate oxygen delivery to the cells; characterized by reduced cardiac output and rapid heartbeat and circulatory insufficiency and pallor
  "loss of blood is an important cause of shock"

verb

• surprise greatly; knock someone's socks off
  "I was floored when I heard that I was promoted"
• strike with disgust or revulsion
  "The scandalous behavior of this married woman shocked her friends"
• strike with horror or terror
  "The news of the bombing shocked her"
• collide violently