Order
One's Turn
noun
When you go in order of turns that's the order. It also represents one's turn in said order as well.
じゅんばん
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
コウイチは順番にEmailに返信をします。
Koichi replies to his emails in order.
今、スーパーで支はらいの順番を待っている所です。
I'm waiting for my turn to pay at the grocery store at the moment.
押さずに順番を待ってください！
Don't push and wait your turn, please!