To Cut
transitive verb, godan verb
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means cut, and the verb form of that is to cut.
When you think to cut something, what do you think about cutting? One thing is cutting down a tree, which is also known as 木, or き. You きる a き.
スイッチを切る
to turn off the switch
木を切る
to cut down a tree
でんわを切る
to hang up the phone
マンゴーはナイフで切る。
You cut mangos with a knife.
あの大きい木、チェーンソーで切ったんですか？
Did you cut that big tree with a chainsaw?
犬の毛を切ったら牛みたいになっちゃった。
I cut my dog's fur, and now it looks like a cow.