na-adjective, noun which may take the genitive case particle 'no', noun
Describes a person, mind, or thing free from impurity, corruption, or worldly influence. Often used for childlike innocence or pristine nature.
彼女の無垢な笑顔に心が洗われた。
Her innocent smile cleansed my heart.
この湖の水は無垢で、そのまま飲める。
The water of this lake is pure and can be drunk as is.
na-adjective, noun which may take the genitive case particle 'no', noun
Refers to materials or substances that are not mixed with anything else; often used for metals like gold or silver. Compare with 金無垢 (solid gold).
See also: 金無垢
この指輪は無垢の金でできている。
This ring is made of pure gold.
無垢の素材を使った家
noun
plain white kimono
Specifically refers to a long kimono made from a single plain-colored cloth, traditionally worn by brides (白無垢). This sense is a noun only.
See also: 白無垢
花嫁は白無垢を着て式に臨んだ。
The bride attended the ceremony wearing a pure white kimono.
Furniture made of solid, unmixed materials is expensive.
From 無 (without) + 垢 (impurity, dirt), literally 'without impurities'. The kanji combination is straightforward and the word has been used in Japanese for centuries.