Verb
(transitive) to fill in or write in using a pen
(idiomatic, transitive) to schedule in a calendar
(idiomatic, transitive) to sign a document to hire someone
Source: en.wiktionary.orgAccountants originally used black ink in ledgers to indicate profit, and red ink to indicate a loss. Source: Internet
A type known as the travelling inkwell was fitted with a secure, screw lid so a traveller could carry a supply of ink in their luggage without the risk of leakage. Source: Internet
Along with substantially lowering the running costs on some of its standard business inkjet all-in-ones, Epson has tried another tack: providing ink in bottles that you can pour into reusable tanks attached to or (more recently) built into the printer. Source: Internet
Most octopuses can eject a thick, blackish ink in a large cloud to aid in escaping from predators. Source: Internet
A perforated container for sprinkling sand on to wet ink in order to dry it.‘ Source: Internet
Black Friday – so named because its sales prompt the metaphorical use of black ink in accounting ledgers to indicate profitability – is widely regarded as the beginning of the holiday shopping season. Source: Internet