Definitions from Wiktionary (ink)

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

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