Noah Webster's New International Dictionary of the English Language
1. (n.) A setting of the mind or thoughts upon a subject; hence, application of mind to books, arts, or science, or to any subject, for the purpose of acquiring knowledge.
2. (v. i.) Mental occupation; absorbed or thoughtful attention; meditation; contemplation.
3. (v. i.) Any particular branch of learning that is studied; any object of attentive consideration.
4. (n.) A building or apartment devoted to study or to literary work.
5. (n.) A representation or rendering of any object or scene intended, not for exhibition as an original work of art, but for the information, instruction, or assistance of the maker; as, a study of heads or of hands for a figure picture.
6. (n.) A piece for special practice. See Etude.
7. (n.) To fix the mind closely upon a subject; to dwell upon anything in thought; to muse; to ponder.
8. (n.) To apply the mind to books or learning.
9. (n.) To endeavor diligently; to be zealous.
10. (v. t.) To apply the mind to; to read and examine for the purpose of learning and understanding; as, to study law or theology; to study languages.
11. (v. t.) To consider attentively; to examine closely; as, to study the work of nature.
12. (v. t.) To form or arrange by previous thought; to con over, as in committing to memory; as, to study a speech.
13. (v. t.) To make an object of study; to aim at sedulously; to devote one's thoughts to; as, to study the welfare of others; to study variety in composition.