noun

1. the act or process of thinking; reflection; meditation; cogitation
2. the power of reasoning, or of conceiving ideas; capacity for thinking; intellect; imagination
3. a result of thinking; idea, concept, opinion, etc.
4. the ideas, principles, opinions, etc. prevalent at a given time or place or among a given people modern thought in education
5. attention; consideration; heed give it a moment's thought
6. mental engrossment; preoccupation; concentration deep in thought
7. intention or expectation no thought of leaving
8. a small amount, degree, etc.; a little; trifle be a thought more careful

Etymology: ME thouht < OE thoht < PGmc *thanht, pret. of *thankjan (> OE thencan: see think)

transitive verb, intransitive verb