〘 noun 〙 A groove-like depression formed by erosion on both sides by the flow of a river. ※Map (1934) by Tomoji Abe "A relatively civilized people originated in the river valley somewhere in the center." Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information |
〘名〙 川の流れで、両側が浸食されてできた溝状の凹みの地形。※地図(1934)〈阿部知二〉「どこか中央辺の河谷に発生した比較的文明のすすんだ民族が」
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