What does サイン mean?
サイン is a Japanese noun meaning “autograph, signature” in English. It can also be translated as “a sign, a signal” depending on context. It is written as サイン in katakana, and sain in romaji. This word is part of JLPT N3 vocabulary.
Example sentences
もし彼女に気付いていたら、私はサインをもらっていただろう。
If I had noticed her, I would have got her autograph.
あなたはそのサインが消えるまでタバコを慎むように求められている。
You are asked to refrain from smoking until the sign is switched off.