Jisho

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Noun
1. sunken kotatsu; low table over a hole in the floor (may have a heat source underneath and a hanging quilt to retain warmth)See also 炬燵
Other forms
掘り炬燵 【ほりごたつ】掘り火燵 【ほりごたつ】掘炬燵 【ほりごたつ】掘火燵 【ほりごたつ】
Notes
掘炬燵: Irregular okurigana usage. 掘火燵: Irregular okurigana usage.

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