noun
Refers to the soft, white, porous sedimentary rock, often used in contexts like geology, art materials, or historical white pigments.
白亜は、チョークの原料として使われることがある。
Chalk rock is sometimes used as a raw material for chalk sticks.
この崖は白亜でできている。
This cliff is made of chalk.
noun
white wall; whitewashed wall
Refers to a wall coated with white plaster or whitewash, often evoking a clean, bright appearance. Commonly used in literary or descriptive contexts.
白亜の壁が朝日に輝いていた。
The whitewashed wall shone in the morning sun.
古い教会の白亜の壁には、歴史が刻まれている。
The white walls of the old church bear the marks of history.
白 (white) + 亜 (a phonetic loan used for its sound, originally meaning 'second' or 'Asia'). The compound is a Sino-Japanese word referring to white chalk or whitewashed surfaces.