This is the 3144th most frequent Japanese word.
削
"削" means "to cut, reduce, shave, or delete."
In this sentence, '削' is used in the context of physically removing material (sharpening).
鉛筆を削りました。
I sharpened the pencil.
Here, '削' signifies the act of editing or cutting out parts from something.
不必要な部分を削除しました。
I removed unnecessary parts.
'削' in this sentence expresses the idea of reduction or decrease in amount.