Collins English-English Dictionary

think [θɪŋk]

1. 1. vt. [tr; may take a clause as object] to consider, judge, or believe

   he thinks my ideas impractical

2. 2. vi. [intr; often foll by about] to exercise the mind as in order to make a decision; ponder

3. 3. vi. [intr] to be capable of conscious thought

   man is the only animal that thinks

4. 4. vi. to remember; recollect

   I can't think what his name is

5. 5. vi. [intr; foll by of] to make the mental choice (of)

   think of a number

6. 6. vi. [may take a clause as object or an infinitive] to expect; suppose

   I didn't think to see you here

7. 7. vi. to be considerate or aware enough (to do something)

   he did not think to thank them

8. 8. vi. [intr; foll by of] to consider; regard

   she thinks of herself as a poet

9. 9. vi. [intr] to focus the attention on being

   think thin

   think big

10. 10. vt. [tr] to bring into or out of a specified condition by thinking

    to think away one's fears

11. 11. n [informal] a careful, open-minded assessment

    let's have a fresh think about this problem

12. 12. n [modifier] [informal] characterized by or involving thinkers, thinking, or thought

    a think session

13. 13. n See also think out think over think up

14. 14. n [Etymology] Old English thencan; related to Old Frisian thenza, Old Saxon thenkian, Old High German denken, Old Norse thekkja, Gothic thagkjan