Tattoo work.
Publicity.
Cheap red wine.
The black or dark-colored fluid ejected by squid, octopus etc, as a protective strategy.
A pigment (or dye)-based fluid used for writing, printing etc.
A particular type, color or container of this fluid.
To sign (a contract or similar document).
To apply a tattoo to (someone).
To apply ink to; to cover or smear with ink.
to eject ink (sense 3)