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This is an old expression used by prostitutes " Have you a light? "
Tonight I was walking a few yards to my home. After I had crossed the road from the Primrose Bar and Restaurant in Ballynahinch, Co. Down in the north of Ireland where I had been having a few pints in excellent company, I was stopped by a young girl, probably jail bait, who said " HYAL" She ran her hand down my side as I lit her cigarette. She was with another girl and a young man who said " Leave him alone." Later when I went to empty rubbish in the bin I met the two girls walking back up the street. They had been unable to buy a lighter in the Enterprise, another bar were under age. I had two lighters in my pocket so I gave them one of these as a present as I do not like to see a smoker stuck without a light.
hyal by Stais September 25, 2005
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Hyalopterous 

Having glassy or transparent wings, like an insect.
First person: "That's sort of like a hyalopterous lemure."

Second: "A what what?"

First: "Nevermind."
Hyalopterous by badpoetlaureate August 5, 2011
Related Words

Hyalitis 

Inflammation of the transparent jelly vitreous humor that fills the chamber of the eye behind the lens.
Hyalitis hurts in the eye.
Hyalitis by Jafje May 3, 2007
The worlds most awesome word... that simple
How often do you Hyalt.

All the time
Hyalt by The Hyalt Organization April 10, 2010
A person who's arguments are transparent and in serious lack of any real substance. The logic behind these transparent posts seem to be of a degenerate nature where the poster is horny for an argument.
Girl "You call me 'Wanx' which is a sexual term and very offensive."

Hyalin: "You have a dirty mind, Wanx. I meant it like 'Whack Job'. What did you bring to it?"

Girl: "You call me "Quief" which is a sexual term and very offensive."

Hyalin: "You have a dirty mind, Quief. If you can't figure out how that's similar to a Mucus "Cap" (hint, hint!), then I can only feel worse for you then I already do."
Hyalin by Istus December 9, 2008
A clear glassy material found in hyaline cartilage or formed as a product of some skin diseases.
They put hyalin in the walls of the house.
Hyalin by Jafje May 3, 2007
A beautiful strong girl with common sense. Dark long hair, sparkling green eyes and average height. She supports everyone she loves, even if she doesnt agree with them... just like the cartilage she was named after.
Hyaline looks so beautiful tonight.
hyaline by HottMum13 October 10, 2013
More from Urban Dictionary

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.
"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."
Bunhead by Jen00 October 24, 2014
Word of the Day on October 6, 2026

trucker's tan 

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.
I had a trucker's tan after driving for 10 straight hours on a sunny day.
Word of the Day on October 5, 2026
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
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