study of history

(Internet slang, especially anime and manga fandom) events or things from the past which one wants to whitewash/erase from history (due to it being embarrassing, poorly received, etc.); dark past

oral history

historicism

(games) sudoku (a type of puzzle)

Alternative spelling of 独鈷: a vajra, a dorje: a kind of double-headed scepter used in esoteric Buddhism; a pattern for cloth, consisting of interlocking tokko shapes

Alternative spelling of 独鈷: a vajra, a dorje: a kind of double-headed scepter used in esoteric Buddhism; a pattern for cloth, consisting of interlocking tokko shapes

(informal) Short for 独身女性 (dokushin josei, “single woman”).

Obsolete spelling of ドイツ (“Germany (a country)”)

Dokdo, Liancourt Rocks (islands in the East Sea)