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to dash against (of waves); to billow; to roll
to wave (e.g. in the wind); to heave; to pound (of a heart); to undulate
海岸に波が激しく波打っている。
Waves are crashing violently against the shore.
嵐の夜に湖面が大きく波打った。
The lake's surface rippled wildly on the stormy night.
強風を受けた田んぼの稲穂が波打つように揺れた。
The rice stalks in the paddies swayed like rolling waves in the strong wind.