phlobaphene
/ˈflɒbəfiːn/(also phlobaphen) Chemistry
noun
Any of a class of reddish or brownish water-insoluble pigments which occur in various barks and other plant tissues, and are polymeric derivatives of tannins.
Origin
Mid 19th century; earliest use found in Henry Watts (1815–1884), chemist. From German Phlobaphen from ancient Greek ϕλοιός bark + βαϕή dye + German -en.