the act of being, wanting or trying to be a nerd
P. Eng J: We are required to write reports for only certain work terms, but I'm writing one anways
Dr. M: Why?
P Eng J: Because I'm going to submit it for a subsequent work term. Yes doctor I'm KEENING. Please help me.
by Engineer March 28, 2005
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A sharpness or quickness of the mind.
Yes, Silveria was autistic, but there was a quiet keenness about her.
by hardi013 September 10, 2013
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Someone who doesn't ride a bike at all, but has one in the shed / garage from years ago (usually with flat tyres, rusty chain and seized up components).

Always used by someone objecting to / complaining about any cycling infrastructure, to try to give credibility to a selfish argument or point of view.
I'm a 'keen cyclist' but I don't want these cycle lanes in front of my house.
by Brownhorse August 17, 2021
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When you put a back brace on a girl, attach it to the ceiling fan, and then stand on a ladder and fuck her while she spins in circles.
Dom probably did a Dirty Keene with those 3 girls earlier
by we__live_in__a_society June 29, 2020
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When you start talking shit when you famous but you didn't do anything nor giving credit to someone and start losing subscribers.
I made a youtube channel and got 100k subs by copying other people's code from Github and now I got Keen Effect.
by OhYeSorry November 22, 2020
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