DENFreq.FrequencyTop 50,000Meanings1nounden; small roomA small, cozy room in a house, often used as a study or private retreat. Borrowed from English 'den'.See also: デン彼かれはDENで読どく書しょを楽たのしんでいる。He enjoys reading in his den.この家いえには小ちいさなDENがある。This house has a small den.