n. the act of teaching at school

n. the training of an animal (especially the training of a horse for dressage)

n. the process of being formally educated at a school; "what will you do when you finish school?"

n. the psychological result of perception and learning and reasoning

n. the cognitive condition of someone who understands; "he has virtually no understanding of social cause and effect"

n. an ability to understand the meaning or importance of something (or the knowledge acquired as a result); "how you can do that is beyond my comprehension"; "he was famous for his comprehension of American literature"

n. profound scholarly knowledge