by heart, from memory, by rote

the sky

something empty / ineffectual / false

empty; vain; sky

first, initial / one-eyed

(dialect, Kagoshima) south (cardinal point)

(archaic) to go south

south, southern / Used in Sanskrit transliterations

(historical) the red-light district in modern-day Shinagawa Ward, Tokyo (as it was located south of Edo Castle)

(historical, archaic) the red-light district in modern-day Shinagawa Ward, Tokyo