並
なみ · nami · JLPT N3 · na-adj
food serving size
🍚 並 = standing side by side in a row: level with the rest, so regular
The kanji 並 began as two people standing side by side. Being level with everyone else came to mean ordinary or standard grade. At gyudon shops, 並盛 (namimori) is the regular bowl and 大盛 (oomori) is the large one.