Kotatsu - noun
A kotatsu is the evolution of hearth and heating used in Japan. It consists of a futon placed over a frame and is an inexpensive way to heat an area. Modern versions are electric, although the more traditional kind features a futon and frame over a small recess of coals.
By
Tim Notari (tastefulTN) -
flickr.com (just a wee bit cropped),
CC BY-SA 2.0,
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