To investigate or study something thoroughly; to master or become highly skilled in something.
博士はその分野を長年究めてきた。
The professor has spent many years mastering that field.
茶道を究めるには日々の稽古が欠かせない。
To master the tea ceremony, daily practice is indispensable.
彼は問題の原因を理論的に究めようと努力している。
He is trying to investigate the cause of the problem theoretically.
剣道の奥義を究めるには時間と忍耐が必要だ。
It takes time and patience to master the deepest techniques of kendo.