noun
Refers to a physically large ocean wave, often used in weather reports, news, or literary descriptions.
台風で大波が海岸に押し寄せた。
Large waves surged onto the shore due to the typhoon.
サーファーは大波を待っていた。
The surfers were waiting for a big wave.
Compound of 大 (おお, 'big') and 波 (なみ, 'wave'). The reading おおなみ is a straightforward kun'yomi combination.