ink
noun
[ ɪŋk ]
• a coloured fluid or paste used for writing, drawing, printing, or duplicating.
• "the names are written in ink"
ink
verb
• mark (words or a design) with ink.
• "the cork has the name of the château inked on to the side"
• sign (a contract).
• "she's just inked a deal to host her own talk show"
Origin:
Middle English enke, inke, from Old French enque, via late Latin from Greek enkauston, denoting the purple ink used by Roman emperors for signatures, from enkaiein ‘burn in’.