means A colored fluid used for writing, drawing, or printing, applied to a surface where it dries into a lasting mark.

from From Old French 'enque,' which came from Late Latin 'encaustum' — itself borrowed from Greek 'enkauston,' meaning 'burned in.' The word points to a vivid practice: the purple-red ink that Roman and Byzantine emperors used to sign documents was thought to be 'burned in' or fixed by heat, a privilege guarded for imperial hands. So the everyday word for the stuff in your pen carries the faint scent of scorched royal signatures.