Wiktionary
shiko
n. (context sumo English) one of the basic sumo exercises; the rikishi raises a leg high in the air to the side, then brings it down with a stamp; it is also performed on the dohyo to drive away bad spirits
Wikipedia
Shikō
Shikō, Shiko or Shikou (written: 志功 or 紫紅) is a masculine Japanese given name. Notable people with the name include:
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(1880–1916), Japanese artist
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(1903–1975), Japanese printmaker and painter