to shut oneself in (e.g. one's room); to be confined in; to fill with (emotion, enthusiasm, power, etc.); to imbue with; to fill a space (of a gas, smell, etc.); to be heavy with (e.g. smoke); to be muffled (e.g. of a voice)
Examples (6 in total)
彼は書斎にひきこもった。
He closeted himself in his study.
自分の部屋にひきこもりたくなっている。
I am starting to want to shut myself in my room.
彼は病気で家にひきこもっている。
He is confined to his house by illness.
ならば、こんな森にひきこもっている必要はない。
In that case, there is no need to be confined in a forest like this.
家にひきこもって残った宿題と格闘する日。
A day spent holed up at home, wrestling with the remaining homework.
日の当たらない奥の部屋にひきこもってぐったりとしていた。
I had shut myself away in the back room, which received no sunlight, and was listless.