knock cold

• Привести кого-либо в бессознательное состояние ударом, обычно кулаком или по голове.

To render someone unconscious by striking them, typically with a punch or blow to the head.

1. Render unconsciousB2informal

   To hit someone so hard that they become unconscious.

   Нокаутировать

   • The boxer knocked his opponent cold in the first round.
   • He was knocked cold by a falling branch.
   • The punch knocked him cold instantly.