Real Dictionary

-think in American English
a pattern or manner of thinking

think
If you are thinking something at a particular moment, you have words or ideas in your mind without saying them out loud.
If you say that you think that something is true or will happen, you mean that you have the impression that it is true or will happen, although you are not certain of the facts.
If you think a lot of someone or something, you admire them very much or think they are very good.
If you think in a particular way, you consider things, solve problems, or make decisions in this way, for example because of your job or your background.
If you think in a particular way, you have those general opinions or attitudes.
If you think of someone or something as having a particular quality or purpose, you regard them as having this quality or purpose.
If you think of something, it comes into your mind or you remember it.
If you think that something is the case, you have the opinion that it is the case.
You can say that you are thinking of a particular aspect or subject, in order to introduce an example or explain more exactly what you are talking about.
You can use think in expressions such as anyone would think and you would think to express your surprise or disapproval at the way someone is behaving.
You can use think in expressions such as you would think or I would have thought when you are criticizing someone because they ought to or could be expected to do something, but have not done it.
You use think in questions where you are expressing your anger or shock at someone's behaviour.
You use think when you are commenting on something which you did or experienced in the past and which now seems surprising, foolish, or shocking to you.
verb: If you are thinking of taking a particular course of action, you are considering it as a possible course of action.
verb: If you think of an idea, you make a mental effort and use your imagination and intelligence to create it or develop it.
verb: If you think of someone, you show consideration for them and pay attention to their needs.
verb: When you think about ideas or problems, you make a mental effort to consider them.

think in American English 1
to form or have in the mind; conceive
intransitive verb: to have a conscious mind, to some extent of reasoning, remembering experiences, making rational decisions, etc
transitive verb: to have or form in the mind as an idea, conception, etc

think in American English 2
to seem
intransitive verb: to seem or appear (usually used impersonally with a dative as the subject)

think in British English
verb: to consider, judge, or believe