「万」(man) means "ten thousand" or "10,000". This is a very important unit in Japanese, as numbers are grouped in sets of four digits (e.g., thousands, ten thousands), unlike the Western system where they are grouped in threes. Example: 「一万円」(ichi-man-en) means "ten thousand yen".

「万(まん)」は「10,000」を意味(いみ)します。日本(にほん)の大(おお)きな数(かず)の数(かぞ)え方(かた)で、とても重要(じゅうよう)です。例(れい)：「一万円(いちまんえん)」。