根こん茎けいこんけいFreq.FrequencyTop 100,000Meanings1nounrhizome; rootstalk; rootstockbotanyBotanical term for an underground plant stem that sends out roots and shoots.ショウガの食しょく用よう部ぶ分ぶんは根こん茎けいです。The edible part of ginger is the rhizome.