theoretical knowledge without practical experience; Literally, “swimming lessons on a tatami floor”

(mahjong) drawing the winning tile off the dead wall after declaring a 槓 (kan, “kong”), worth 1 翻 (han, “double”)

(linear algebra) upper triangular matrix

(grammar) Short for 上一段活用 (kami ichidan katsuyō): upper monograde conjugation

(grammar) an abbreviation for 上二段活用; upper dual grade conjugation

Alternative spelling of お手上げ: throwing up one's hands: giving up, quitting

(obsolete) England (a country in Europe)

Obsolete spelling of カリフォルニア (Kariforunia, “California (a state of the United States)”)

Obsolete spelling of アルプス (Arupusu, “Alps (a mountain range in Western Europe)”)

Obsolete spelling of コロンビア (“Colombia (a country in South America)”)