Across The Board
Row Of Houses, Altogether
noun
Line up house counters and you'll see that all the houses you've counted are the same across the board. It also turns them into a row of houses.
This is a combination of the words 軒 and 並 that you've already learned, so you should be able to read this word too. Just note that for 並, the み in なみ is sticking out! While you might sometimes see this written 軒並, 軒並み is way more common.
IT関連の株価が軒並み下落しました。
IT-related stock prices fell across the board.