ink

1 ink /ˈɪŋk/ noun
plural inks
1 ink
/ˈɪŋk/
noun
plural inks
Britannica Dictionary definition of INK
1 
: colored liquid that is used for writing or printing
[noncount]
[count]
2 
[noncount] US slang : public attention : publicity
3 
[noncount] biology : the black liquid that is used by some sea creatures for protection
2 ink /ˈɪŋk/ verb
inks; inked; inking
2 ink
/ˈɪŋk/
verb
inks; inked; inking
Britannica Dictionary definition of INK
[+ object]
1 
2 
US, informal
a  : to sign (a document) to show that you accept or agree with what is written on it
b  : to hire (someone) to do something by having that person sign a contract

ink in

[phrasal verb]
ink in (something) or ink (something) in
: to write or draw (something) in ink