giant wave; large wave
Refers to an exceptionally large ocean wave, often in contexts like tsunamis, storm surges, or surfing. More specific than 大波 (おおなみ).
The surfer challenged the giant wave.
A giant wave from the tsunami struck the coastal town.
Compound of 巨大 (きょだい, 'giant') and 波 (は, 'wave'). The reading きょだいは follows standard on'yomi for the kanji.