1An arrow—the slender projectile shot from a bow (used to hit a target or prey).
弓道で矢を放つときは呼吸を整えることが大事だ。
In kyudo (Japanese archery), it's important to control your breathing when releasing the arrow.
古い絵巻に戦士が矢を射る場面が描かれている。
An old picture scroll depicts a warrior shooting an arrow.
弓と矢は狩りの道具として昔から使われてきた。
Bows and arrows have long been used as hunting tools.
2A wedge or chock used to secure or stabilize something—a small piece (often wood) driven in to hold parts in place (historical/specialized use).
古い扉は木の矢で固定されていた。
The old door was secured with wooden wedges.
家具の隙間に矢（くさび）を打ち込んで動かないようにした。
We drove a wedge into the gap in the furniture so it wouldn't move.