ba̍k-tsap墨汁

prepared ink

prepared ink (in a liquid state, used in East Asian painting and calligraphy)

English Wiktionary, “墨汁” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%A2%A8%E6%B1%81 · confidence: Medium (Wiktionary, Hokkien)