staying cooped up, shutting oneself away, being filled with, being infused with
部屋にこもって泣け
Go shut yourself in your room and cry.
— 最強のふたり (2011)
彼は、よく書斎にこもって、こういうものを書きます。
He often shuts himself away in his study and writes things like this.
家にこもって本が読みたい。
I want to stay home and read books.