ink

Ink is a colored liquid that you use to write with on paper. When you sign on the dotted line, you usually do so with ink.

You'll usually find ink inside a pen, automatically flowing through its tip, although years ago people had to dip a quill into a pot of ink to write with ink. Other ways ink is used include printing images, stamping information, and drawing pictures. Another ink is the fluid released by certain mollusks, like squids, to hide them from predators. Ink, from the Old French encre, "dark writing fluid," has the Greek root enkaiein, "to burn in."

Definitions of ink
  1. noun
    a liquid used for printing or writing or drawing
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    types:
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    indelible ink
    ink that cannot be erased or washed away
    India ink, drawing ink
    a black liquid ink used for printing or writing or drawing
    magnetic ink
    an ink that contains particles of a magnetic substance whose presence can be detected by magnetic sensors
    printer's ink, printing ink
    a semisolid quick drying ink made especially for use in printing
    writing ink
    any permanent or washable ink used with pens
    marking ink
    an indelible ink for marking clothes or linens etc.
    type of:
    liquid
    a substance that is liquid at room temperature and pressure
  2. noun
    dark protective fluid ejected into the water by cuttlefish and other cephalopods
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    type of:
    bodily fluid, body fluid, humor, humour, liquid body substance
    the liquid parts of the body
  3. verb
    append one's signature to
    “They inked the contract”
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    type of:
    sign
    be engaged by a written agreement
  4. verb
    fill with ink
    ink a pen”
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    types:
    red-ink
    mark with red ink
    type of:
    fill, fill up, make full
    make full, also in a metaphorical sense
  5. verb
    mark, coat, cover, or stain with ink
    “he inked his finger”
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    type of:
    mark
    make or leave a mark on
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