Let's look at the dictionary, first!
3.Often, studies. a student's work at school or college: to pursue one's studies.
1. (n.)application of the mind to the acquisition of knowledge,
as by reading, investigation, or reflection.
2.the acquisition of knowledge or skill in
a particular branch of learning, science, or art: the study of law.3.Often, studies. a student's work at school or college: to pursue one's studies.
4.something
studied or to be studied.
5.a detailed
investigation and analysis of a subject, phenomenon, etc.
6.a written
account of such an investigation.
7.a well-defined,
organized branch of learning or knowledge.
8.zealous
endeavor or assiduous effort.
9.the object of
such endeavor or effort.
10.deep thought;
reverie.
11.a room set
apart for private study, reading, writing, or the like.