Verb, portmanteau of "green ink (letter)". Used to describe the act of writing an aggrieved complaint letter or e-mail, usually to the media and always by someone emotionally damaged or just plain insane. So called because such letters are, according to urban legend, frequently written using green ink.
When I wrote that piece about asylum seekers I got severely grinked by a retired armymajor from Tunbridge Wells.
A Grink is someone who is usually small but has a lot of confidence or personality. A Grink is not a good or a bad thing; it simply describes someone who has a lot of presence (even if not obvious at first).
A popularslang term for using the drug commonly referred to as "marijuana" or the "sticky icky." It originated on the website quora and has been popularized by online communities
"Y'all grinkin' tonight?" "Nah, I grinked last night and got too scared."