haboku
A technique of using splashed ink in brushwork painting, especially for painting a landscape.
uncountable
The haboku idiom had appeared in South China in the thirteenth century, and appealed greatly to visiting Japanese Zen Buddhists, who took examples back with them.
1979, John M. Rosenfield & William Jay Rathbun, Song of the Brush: Japanese paintings from the Sansō Collection, Seattle Art Museum
Where it comes from
From Japanese 破墨 (haboku はぼく), from Middle Chinese 破 (pʰà "broken up") + 墨 (mok "ink") (compare Mandarin pòmò 破墨, Cantonese po³-mak⁶ 破墨).
Adapted from the Wiktionary entry haboku (CC BY-SA 4.0).