Ordinary
Average
noun, の adjective
The things that line up are the ordinary and average things. The extraordinary things skip the line, because they don't have to wait. Sad for all the ordinaries.
Since this word is made up of a single kanji, it probably uses the kun'yomi reading. You did not learn this reading, so here's a mnemonic to help you to remember:
You're at the coast, looking out at the 波 (なみ), which are all very ordinary, average. Nothing exceptional about those waves.
運動神経は並だったが、頭はすこぶる良かった。
He had ordinary reflexes, but a great mind.