JMdict: 1201670

海豚 【いるか】

  1. [n] dolphin (or other small toothed whales, incl. porpoises, belugas, etc.)
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Sea, Ocean カイ うみ
Pork, Pig トン ぶた

Words often seen with this one: (experimental feature)

先生 (44),  (28), ショー (21)