Godan verb with 'ru' ending, Transitive verb
to close up; to shut up (e.g. behind doors)
ラスト・オーダーは締め切らせていただきました。Last call! to cut off (e.g. because a deadline has expired); to close off (e.g. subscription list)
usu. 締め切る
Also written 閉め切る【しめきる】、〆切る【しめきる】、閉切る【しめきる】、締切る【しめきる】