台だい地ちだいちCommon wordFreq.FrequencyTop 50,000Meanings1nounplateau; tablelandA flat elevated landform; used in geography and everyday description.この台だい地ちは昔むかし、海うみの底そこだったそうです。This plateau is said to have been the bottom of the sea long ago.台だい地ちの上うえには広ひろい牧ぼく場じょうが広ひろがっている。A wide pasture spreads across the top of the plateau.