虹にじ鱒ますTop 50000MeaningsNoun1. rainbow trout (Oncorhynchus mykiss) (Usually kana)Kanji used虹rainbow鱒troutPitch accentにじますExamples1これでこの一いっ画かくは少すくなくとも２０匹ひきニジマスがいるわけだ。So now there are at least 20 rainbow trout in this area.