Signal
Sign
noun, verbal noun
A diagram everyone joins together to see is a signal or a sign.
This word uses the kun'yomi reading for 合 and the on'yomi reading for 図. You know them both now, so you should be able to read this too!
わたしが合図をしたら、大声で「エイドリアーン！」とさけんでください。
When I give the signal, yell, "Adrian!" loudly.
わたしに、売りか買いかの合図の出し方をおしえてくれませんか？
Can you teach me how to give the buy or sell signal, please?
彼女は彼に、秘密の合図を送った。
She sent a secret signal to him.