Verb Close and open one eye quickly, typically to indicate that something is a joke or a secret or as a signal of affection or greeting. Noun An act of closing and opening one eye quickly, typically as a signal.
Dolphins are reputed to be able to shut down one side of their brain and sleep. On wakening, they will shut down the other half. (They still have to breath air.) So, one eye open at a time is probably correct.
Your body doesn't actually "shut down". Your heart skips a beat, not allowing you to breathe in or out, and not allowing you to keep your eye lids open. When you sneeze, muscles in your body contract. One of those muscles is the one responsible for you eye lids. If your body was to completely shut down, it wouldn't start up again.
It means you have one eye open. If you mean the idiom "sleep with one eye open," it means that you are staying alert at all times in case of disaster.
no
I believe a shark sleeps with one eye open.
To nod; to sleep; to nap., To shut the eyes quickly; to close the eyelids with a quick motion., To close and open the eyelids quickly; to nictitate; to blink., To give a hint by a motion of the eyelids, often those of one eye only., To avoid taking notice, as if by shutting the eyes; to connive at anything; to be tolerant; -- generally with at., To be dim and flicker; as, the light winks., To cause (the eyes) to wink., The act of closing, or closing and opening, the eyelids quickly; hence, the time necessary for such an act; a moment., A hint given by shutting the eye with a significant cast.
One of its eyes may be hurt or it may have pink eye
wink
It's not exactly a technical method, but this the way we used to tell which is the dominant eye. Quickly, without thinking about it, point at a distant object, and then don't move your arm and finger. Close one eye, then open it and close the other eye. Looking through one eye you will be pointing at the object, and looking through the other eye you will be pointing off to the side. The eye with which you see your finger pointing at the object is your dominant eye.
keep one's eye on the prizean eye for an eyesleep with one eye openkeep your eye on the ballgive someone the evil eyehit the bull's eyehave a bird's eye viewget some shut eye (sleep)turn a blind eye to
The inability to open one eye could indicate a number of conditions, including injury to the eye, infection, allergic reaction, foreign objects in the eyeball or under the eyelid, or hypersensitivity to light. These are just a few possibilities. Ophthalmological issues can quickly turn serious and even small injures can cause blindness if left unattended, so I would see a veterinarian immediately to determine the actual cause.