1. tatami mat (esp. as a measure of room size, either 1.82 sqm or 1.54 sqm)
Wikipedia definition
2. TatamiA tatami is a type of mat used as a flooring material in traditional Japanese-style rooms. Traditionally made of rice straw to form the core (though nowadays sometimes the core is composed of compressed wood chip boards or polystyrene foam), with a covering of woven soft rush (igusa) straw, tatami are made in standard sizes, with the length exactly twice the width. Usually, on the long sides, they have edging (heri) of brocade or plain cloth, although some tatami have no edging.
Read “Tatami” on English Wikipedia
Read “畳” on Japanese Wikipedia
Read “Tatami” on DBpedia


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