What does 波 mean?
波 is a Japanese noun meaning “wave” in English. It can also be translated as “ups and downs, (something) advancing step by step, tendency” depending on context. It is written as 波 in kanji, なみ in hiragana, and nami in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
くだける波が泡を作った。
The breaking waves formed foam.