knock out

to become unconscious.

• I was knocked out.
• Tom was knocked out.
• He knocked his opponent out.
• Shut up, or I'll knock you out.
• Tom knocked out John and took his gun.
• Tom was knocked out in the tenth round.
• Tom knocked out John with a baseball bat.
• He was knocked out by a punch in the first round.
• The boxer finally recovered consciousness, ten minutes after he had been knocked out.