ichidan verb, transitive verb
Transitive: used when someone closes a door, window, lid, shop, etc. The thing being closed is normally marked with を.
寒いので、窓を閉めてください。
It's cold, so please close the window.
寝る前に玄関のドアを閉
I shut the front door before going to bed.
店は九時に閉めます。
We close the shop at nine.