study:1.A state of contemplation or musing; a state of mental abstraction; a reverie.2. the application of the mind to the acquisition of learning; devotion of time and effort to the pursuit of knowledge, esp. by means of written sources, observation, or experiment; scholarly or intellectual work or effort.——Oxford English Dictionary

study:1.when you spend time learning, especially at home or by yourself rather than during school.2.when you examine or consider something very carefully and in detail.——Longman Dictionary of Contemporary English  @en