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1.
A whiny prepish person whom gripes and complains about not getting "banker" hours at work. One typically finds these individuals slothing about, attempting to grab the spotlight whenever possible
Stop being such a coiner about this, and do what you're told.
by Allan Riggleman June 22, 2008
 
2.
In a free-to-play videogame, a Coiner is someone who pays real money in order to get an advantage over free players. The term possibly originated in Exteel, where the real money equivalent was termed NCcoin.
The term is seldom used to describe people who pay for things which don't give a gameplay advantage over free players, such as cosmetic modifications.
Look at that coiner, with his full Aerobolt mechanaut.
by Torsk June 29, 2011
 
3.
Conflict Of Interest boner.

A boner who's cause would be generally regarded as inappropriate. Particularly pertaining to a conflict within oneself due to having said boner over the subject in question.
When a man gets an erection over the hot "chick" in Hanson.

"Bro i know it's wrong but that midget in the tube top is giving me a raging C.O.I.ner"

"Have you heard about Beast Chokeing? That shit gives me the weirdest C.O.I.ner."
by Japarab November 07, 2011
 
4.
1. A person who creates coinage, as in making the physical currency;

2. A person who coins or mints new words that catch on and enjoy general usage. NOTE: Just as with money (the origin of the metaphor) there are legitimate coiners whose product has value...and there are counterfeiters who produce cheap, fake, debased words that devalue the language.
"They sang Kipling's 'The Coiner' last night; it was great - what with all that clinking clanking percussion..."

"That Rehka, what a coiner... She's making up words all the time!"
by Emyth February 03, 2010
 
5.
A whiny prepish person who constantly gripes and complains about not getting "banker" hours at work. These idividuals can usually be found slothing about attempting to hog the spotlight whenever possible
Stop being such a coiner man! Grow up and work what you're told.
by Allan Riggleman June 22, 2008