writing ink

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Noun1.writing ink - any permanent or washable ink used with penswriting ink - any permanent or washable ink used with pens
ink - a liquid used for printing or writing or drawing
References in periodicals archive ?
A Writing ink B Shoe polish C Gunpowder D Blackboard paint QUESTION 6 - for 6 points: On which day is pumpkin pie traditionally eaten in the USA?
One document outlines the chemicals and techniques necessary for developing certain types of secret writing ink and a method for opening sealed letters without detection.
Naturalist Gordon Simpson, who will be leading the walks, said fungi doing well this year include fly agaric, the familiar red and white toadstool once chopped up in milk and used as fly killer, the blusher so named because it turns pink when bruised, and the 'ink cap', which eventually turns into a mushy black liquid, sometimes used as a writing ink.