To be in a deep, soundless sleep, especially due to exhaustion or fatigue. The kids are all upstairs, knocked out cold from our day's hike. My girlfriend and I were knocked out cold as soon as we got home from our four-hour cycle around the city. Rover's been knocked out cold since we got back from that hike. Guess I tired him out!

To cause something to fall out of something else by striking or colliding with it, either intentionally or unintentionally. In this usage, a noun or pronoun can be used between "knock" and "out." I tried to knock out the broken piece, but it seems like it's stuck in there. When Dave crashed his bike, he knocked the mail out of the mailbox.

2018年11月20日 · Christopher Giza, professor of pediatric neurology and neurosurgery at UCLA, explains what happens when you’re knocked out, how it’s different from the average concussion, and the best course of action following a knock-out blow.

"Knocked Out Cold" is a slang term used to describe the state of being unconscious due to a physical blow or trauma. It is often used in situations where someone has been hit so hard that they lose consciousness and fall to the ground, completely incapacitated.

2016年1月5日 · Thus "knocked out cold" would be appropriately descriptive for someone who was "knocked" fully unconscious by a physical impact, usually a blow to the head, and is totally unresponsive for a period of time.

get knocked out cold To be rendered unconscious, as by a physical blow, medication, or other means. I had a shot at a championship boxing title, but I got knocked out cold in the semi-finals.

2022年5月15日 · Choked out as exhibition: I let someone choke me out once, that almost felt rejuvenating - whether it was adrenaline surging when I came back or some other survival reaction. I felt energized. In all of these instances, I was out for less than 30 seconds.

Getting knocked out cold doesn’t feel like anything. It’s like someone turned the tv your brain was watching off. It is really bad when you come too because you’re confused, senses don’t work and you hurt but you don’t even know why.

2010年6月12日 · Get the knocked out cold mug. The act of a person being hit on the button. Usually the chin or behind the ear. Then going unconcious.

One variation of “out cold” is “knocked out cold”. This version implies that someone was hit so hard that they were instantly knocked unconscious. Another variation is “cold out”, which means the same thing as “out cold” but with the order of words reversed.