Inking is the process of using a liquid known as ink, which contains natural or man-made pigment(s). In biology: ... Found on http://en.wikipedia.org/wiki/Inking
Ink'ing adjective Supplying or covering with ink. Inking roller , a somewhat elastic roller, used to spread ink over forms of type, copperplates, etc. -- Inking trough or table , a trough or table from which the inking roller receives its ink. Found on http://www.encyclo.co.uk/webster/I/62