You refer to someone's mind when talking about their thoughts. For example, if you say that something is in your mind, you mean that you are thinking about it, and if you say that something is at the back of your mind, you mean that you are aware of it, although you are not thinking about it very much.

Your mind is your ability to think and reason.

If you have a particular type of mind, you have a particular way of thinking which is part of your character, or a result of your education or professional training.

You can refer to someone as a particular kind of mind as a way of saying that they are clever, intelligent, or imaginative.

If you tell someone to bear something in mind or to keep something in mind, you are reminding or warning them about something important which they should remember.

If something brings another thing to mind or calls another thing to mind, it makes you think of that other thing, usually because it is similar in some way.

If you cast your mind back to a time in the past, you think about what happened then.

If you close your mind to something, you deliberately do not think about it or pay attention to it.

If you change your mind, or if someone or something changes your mind, you change a decision you have made or an opinion that you had.

If something comes to mind or springs to mind, you think of it without making any effort.

If you say that an idea or possibility never crossed your mind, you mean that you did not think of it.

If you see something in your mind's eye, you imagine it and have a clear picture of it in your mind.

If you have a mind to do something, you want, intend, or choose to do it.

If you say that you have a good mind to do something or have half a mind to do it, you are threatening or announcing that you have a strong desire to do it, although you probably will not do it.

If you ask someone what they have in mind, you want to know in more detail about an idea or wish they have.

If you have it in mind to do something, you intend or want to do it.

If you do something with a particular thing in mind, you do it with that thing as your aim or as the reason or basis for your action.

If you say that something such as an illness is all in the mind, you mean that it relates to someone's feelings or attitude, rather than having any physical cause.

If you know your own mind, you are sure about your opinions, and are not easily influenced by other people.

If you say that someone is losing their mind, you mean that they are becoming mad.

If you make up your mind or make your mind up, you decide which of a number of possible things you will have or do.

You can use the expression mind over matter to describe situations in which a person seems to be able to control events, physical objects, or the condition of their own body using their mind.

If a number of people are of one mind ,of like mind, or of the same mind, they all agree about something.

If you say that something that happens is a load off your mind or a weight off your mind, you mean that it causes you to stop worrying, for example because it solves a problem that you had.

If something is on your mind, you are worried or concerned about it and think about it a lot.

If your mind is on something or you have your mind on something, you are thinking about that thing.

If you have an open mind, you avoid forming an opinion or making a decision until you know all the facts.

If something opens your mind to new ideas or experiences, it makes you more willing to accept them or try them.

If you say that someone is out of their mind, you mean that they are mad or very foolish.

If you say that someone is out of their mind with a feeling such as worry or fear, you are emphasizing that they are extremely worried or afraid.

If you say that someone is, for example, bored out of their mind ,scared out of their mind, or stoned out of their mind, you are emphasizing that they are extremely bored, scared, or affected by drugs.

If you put your mind to something, you start making an effort to do it.

If something puts you in mind of something else, it reminds you of it because it is similar to it or is associated with it.

If you can read someone's mind, you know what they are thinking without them saying anything.

To put someone's mind at rest or set their mind at rest means to stop them worrying about something.

If you say that nobody in their right mind would do a particular thing, you are emphasizing that it is an irrational thing to do and you would be surprised if anyone did it.

If you set your mind on something or have your mind set on it, you are determined to do it or obtain it.

If something slips your mind, you forget it.

If you speak your mind, you say firmly and honestly what you think about a situation, even if this may offend or upset people.

If something sticks in your mind, it remains firmly in your memory.

If something takes your mind off a problem or unpleasant situation, it helps you to forget about it for a while.

You say or write to my mind to indicate that the statement you are making is your own opinion.

If you are in two minds, you are uncertain about what to do, especially when you have to choose between two courses of action. The expression of two minds is also used, especially in American English.