Noun
やじるし
あの矢印の道路標識は何という意味ですか。
What does the arrow road sign mean?
An arrow seal is an arrow you stick down on a sign or piece of paper or document or whatever. We can just call it an arrow, though.
The reading is 矢 and 印 put together into one. The 印 is like the actual vocab word 印, so think back on that.