noun, noun or participle which takes 'suru'
pencil sharpened at both ends; sharpening a pencil at both ends
Refers to the frugal practice of sharpening both ends of a pencil to use it completely. Can refer to the pencil itself or the act of sharpening it that way.
祖母は貧乏削りにしてまで鉛筆を使い切った。
My grandmother used up pencils by sharpening them at both ends.
貧乏
You need to be careful when carrying a pencil sharpened at both ends.