an superior gemellus muscle

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

United States Virgin Islands (an archipelago and dependent territory of the United States, part of the Virgin Islands in the Caribbean Sea)

the National Aeronautics and Space Administration

(anatomy) an obliquus capitis superior muscle