A synonym for penis or a nickname for someone with the initials B. N..
Wow that is a big big niner.
by lil'niner June 6, 2016
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When two women are drunk and they're feeling a little frisky they may engage in a form of sixty-nine which we like to call "giner niner".
Those two women were so drunk last night that they went from dancing naked on a piano straight into a giner niner.
by Jassle March 26, 2016
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When 2 women engage in 69 it's called a giner niner. Derivative of the Latin term lickalotopuss.
Did you see those hotties doing the giner niner?
by Jassle March 12, 2016
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A niner is typically referred to by blue collar working folk. It describes the amount of hours worked in a day. If you work a normal 9 to 5 job, you take the first hour you start working, and use it as reference for the total hours worked in a day.

For example- a 9am-5pm work day is 8 hours total, but since you started at 9am, you can call it a NINER.

A niner is commonly associated with high stress levels...
"man, that NINER really did me in today..."
"I'm so exhausted from my week of NINERS"

"some days I feel like I worked a NINER, even though it was just a fiver"
by fuckoffimstressed January 18, 2018
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grade 9 in high school - mostly used in Canada. derogatory term
Person 1: It's the first day of school, we're finally grade 10s!

Person 2: Yeah but now we have to deal with all the incoming niners. :(
by allhandlesarealreadyinuse October 21, 2023
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