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

n a liquid used for printing or writing or drawing

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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:
a substance that is liquid at room temperature and pressure

n dark protective fluid ejected into the water by cuttlefish and other cephalopods

Type of:
bodily fluid, body fluid, humor, humour, liquid body substance
the liquid parts of the body

v append one's signature to

“They inked the contract”
Type of:
be engaged by a written agreement

v fill with ink

ink a pen”
mark with red ink
Type of:
fill, fill up, make full
make full, also in a metaphorical sense

v mark, coat, cover, or stain with ink

“he inked his finger”
Type of:
make or leave a mark on

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