Sluck is the combination of snow and sleet that accumulates underneath the wheel wells and bumpers of semi-trailer trucks on the interstate during winter storms that always seem to let loose as you are passing them going 60 MPH.
Royce: Well, I'm glad the snowstorm seems to have let up. The road is clear enough to drive a little faster now.

Tom: Yeah we should be able to make it to Chicago pretty close to when we thought we would.

(Car passes a Semi trailer truck and "splat")

Royce: Wow, that was a lot of sluck from that semi. I'm glad the wipers are still working.
by mixgochix October 6, 2011
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the action of noisly drinking coffee..
Tabitha shuffed into the room, answering questions only with grunts and the sound of slucking her coffee.
by wnohgb_washu November 2, 2004
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The act of fornication as carried out on a sled speeding down a hill. Sledding on a steep incline is not recommended, and the participants risk the threat of serious injury. Just another way to heat up your sex life in those chilly winter months. Common in Norway.
Sledder 1: What the fuck is on that sled?

Sledder 2: Oh, just your aunt and uncle alpine slucking.

Sledder 1: ...
by fornicatia January 5, 2010
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sucking and slurping dick/sucking and slobbering/sucking and sliding on the dick
Girl last night I was slucking on his d**k
by Kiarakissess April 2, 2021
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Sluck up refers to the act of putting in more effort in what one does for better results. It is mostly used to encourage someone who have not done well as expected or supposed to be in a particular time or session.
Adimchi you need to sluck up this semester to get a good result and make your parents proud.

The manager charged the employees to sluck up as they are starting up a new project.
by Chiagozie January 27, 2022
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When a person is acting very slippery, or suspicious.

It can also be used as a replacement for the word 'slick' or 'suck'.
Sluck is able to be used as an insult as well.
"Oh man, you're acting very slucky right now man."
"Dude! That was so sluck!"
"You slucker!"
by thesluckiestofallsluckers November 18, 2021
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A hoe that likes hockey players' weiner. (Puck slut)
Maggey is the biggest sluck on the planet.
by Nrc December 4, 2013
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