鉱こう脈みゃくこうみゃくFreq.FrequencyTop 50,000Meanings1nounore vein; lode; reef; streakGeological term for a mineral deposit filling a fissure in rock. Used in mining and geology contexts.この山やまには金きんの鉱こう脈みゃくがある。There is a vein of gold in this mountain.地ち質しつ学がく者しゃは新あたらしい鉱こう脈みゃくを発はっ見けんした。The geologist discovered a new ore vein.