soft wood, to lay in stores of firewood
梄 centers on wood used as fuel: soft wood suitable for burning, and the act of storing firewood for later use.
梄 combines 木 (tree, wood) with 酉, which likely contributes the sound. The character is associated with firewood and soft wood, but the exact historical development is uncertain.
A tree 木 beside a wine vessel 酉: imagine soft wood being split and stacked like wine jars, ready to be burned as firewood.
For ヨウ, picture a yo-yo made of soft wood: yo-yo -> ヨウ, and you store it like firewood when not playing.