コククジラ LinksSentence search for コククジラSentence search for 克鯨Sentence search for こくくじらSentence search for 児童鯨Edit in JMdict Noun1. gray whale (Eschrichtius robustus); grey whaleUsually written using kana aloneOther forms克鯨 【こくくじら】、児童鯨 【こくくじら】Notes克鯨: Rarely-used kanji form. 児童鯨: Rarely-used kanji form. Discussions Log in to talk about this word.