If you get your head around something, you come to understand it even though it is difficult to comprehend.
"Get your head around something" means to understand or come to terms with a complex or difficult concept or idea. It implies a mental effort to grasp or comprehend something that is challenging or unfamiliar.
"Head" can refer to the part of the body that contains the brain and sensory organs, or it can mean to lead or be in charge of something. It can also describe the top or front of something, such as the "head" of a line or a "head" of lettuce.
"Pertain to the head" means to relate or have relevance to the head or brain. It could refer to something physically affecting the head, such as a headache, or to a topic or subject matter that is connected to the head.
"Encircle" means to form a circle around something, or to surround it. It often implies wrapping something around an object or place.
Scratching the head during a conversation can be a sign of confusion, uncertainty, or trying to remember something. It could also signal discomfort or nervousness in that situation.
The phrase "out of his head" typically means that someone is acting irrationally or speaking without a clear grasp on reality. It can also refer to someone being excited, passionate, or highly enthusiastic about something.
It means that something is to much for you to handle
The phrase 'it's all in your head' suggests that something is imagined or perceived only by the mind, rather than being a tangible reality. It implies that a situation or problem may not be as significant or concerning as someone believes it to be.
Holding something over your head gives the mental image of holding it just out of reach so that you will pursue it.
Around
Around (something or someone) All around
Turn something around
it means something around more
He wants some something something ;)
It means to remove or cut off the head of something, usually an animal.
Something you describe that gives the reader or listener an image in their head.
I think it has something to do with air pressure not blood vessels.
If used as an idiom, it usually means that you are confused about something. The image is of you scratching your head to try to think better.