ink 
(ĭngk)
(ĭngk)n.
1. A pigmented liquid or paste used especially for writing or printing.
2. A dark liquid ejected for protection by most cephalopods, including octopuses and squids.
3. Informal Coverage in the print media; publicity: Her campaign rallies generated a lot of ink.
4. Informal A tattoo or tattoos: showed us his ink.
tr.v. inked, ink·ing, inks
1. To mark, coat, or stain with ink.
2. To apply black lines to (a drawing or sketch) using pen and ink or a digital graphics program.
3. Informal
a. To append one's signature to (a contract, for example).
b. To engage or hire by means of a contract.
4. Informal To tattoo.
[Middle English inke, from Old French enque, from Late Latin encaustum, purple ink, from Greek enkauston, painted in encaustic, from enkaiein, to paint in encaustic, burn in; see ENCAUSTIC.]