projectile

金玉: (uncommon) a golden ball / 金玉, 睾丸: (slang, mildly vulgar) balls, testicles, bollocks, nuts / 金玉: (slang, mildly vulgar) a boy / 金玉: (uncommon) alternative name for 金柑 (kinkan, “kumquat”)

(uncommon) morning

a tree spirit

one of the three sacred treasures comprising the Imperial Regalia of Japan

Alternative form of 大頭

(idiomatic) bright, intelligent, sharp

spherical object / ball

a sharp edge (of a ball)

(idiomatic) to be sharp; to be keen; to be on the ball; to have a mind like a steel trap; to be clever