Indian ink
noun🔊/ˌɪndiən ˈɪŋk/
🔊/ˌɪndiən ˈɪŋk/
(North American English also India ink)
[uncountable]a very black ink used in drawing and technical drawing 墨；墨汁 Word Originmid 17th cent.: originally applied to Chinese and Japanese pigments prepared in solid blocks and imported to Europe via India.