gall-nut ink

== English == === Noun === gall-nut ink (plural gall-nut inks) acid blue-to-black ink, blue or purple when fresh, but turning intense black from iron oxidation, containing iron ions and tannic acids obtained from crushed gall-nuts and a solution of gum, or glue, and copperas, slowly replaced carbon ink and used from late antiquity to 20th century ==== Synonyms ==== gall nut ink gallnut ink iron-gall ink iron gall ink oak-gall ink oak gall ink standard ink common ink ==== Translations ====