What is the meaning of Think?

To ponder, to go over in one's head.

To communicate to oneself in one's mind, to try to find a solution to a problem.

To conceive of something or someone (usually followed by of; infrequently, by on).

To be of opinion (that); to consider, judge, regard, or look upon (something) as.

To guess; to reckon.

To plan; to be considering; to be of a mind (to do something).

To presume; to venture.

Ellipsis of think so.

An act of thinking; consideration (of something).

To seem, to appear.

to think, to conceive, to have in mind

to believe, to hold as an opinion, to judge; to feel, to have as an emotion

to ponder, to meditate, to consider, to reflect on

to have scruples, to doubt, to reconsider

to devise, to work out, to contrive

to be ashamed

thought, opinion, frequently one’s own opinion

Source: wiktionary.org