to put away; to stow away; to tuck away; to hoard
大事な書類を引き出しの奥に仕舞い込んだ。
I tucked the important documents deep in the back of the drawer.
昔の手紙を箱に仕舞い込んでいたのを見つけた。
I found that I had stowed away old letters in a box.
大切なものを仕舞い込む前に必ず場所を記録しておくべきだ。
Before putting away something important, you should always note down where you put it.