Etymology

katana

K5A1T1A1N1A1

Today it means: A type of Japanese longsword, having a single edge and slight curvature, historically used by samurai and ninja. Full definition →

Japanese 刀
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The story

  1. Japanese · borrowed from刀“single-edged sword”
  2. English todaykatana

Borrowed from Japanese 刀 (katana, “single-edged sword”).

Etymology from Wiktionary, CC BY-SA 4.0.