Top definition
MONO = ONE
RAIL = RAIL

One-rail mass-transit, you can find one in Sydney.
"I'm the best monorail-driver ever!"
-Homer Simpson
by w00dy January 20, 2005
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2
Mono means one and rail means rail.

Sydney's monorail exemplifies excellent town planning, just like the popsicle stick skyscraper, the 50-foot magnifying glass and that escalator to nowhere.
Lyle Lanley: The monorail put Sydney on the map, next to Brockway, Ogdenville, and North Haverbrook.

Sydney: Mono...doh!!!
by santa's little helper April 04, 2012
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3
for a girl to grind a guy who is laying down, esp. with his penis between her labia minora
I couldn't get her to let me inside, but she did take a ride on the monorail.
by Rod X February 14, 2014
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4
When an individual is held down against their will whilst an agressor positions his buttocks either side of the poor soul's nose. The "crack" is then rubbed up and down the face in a straight line, mimicing the movement of a monorail.
The group thought it would be funny to take Ed down a peg or too, so they held his arms and legs in order to allow Rhodri to monorail him.
by Benjamin Shrewpert November 28, 2006
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5
When two guys put the tips of their erect dicks together and one guy strokes both dicks like it is one large dick.
gay man sex is fun when you monorail
by 596A December 11, 2010
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6
1 : Partaking in intercourse aggressively enough that the other participant believes there are multiple partners.

2 : A one man train.
He was so aggressive last night, I thought there were eight of them, it was hard to believe it was just a monorail.
by JP's November 19, 2016
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7
Monorail cat is a popular internet "lolcat" or image macro of a cat laying what is known as "monorail style". This is where the cat will lay with all four paws under his body and head laying on floor. It was so named for its resemblance to the mass transit system, the Monorail. The most comon and most popular monorail cat is a Domestic Longhaired cat laying "monorail style" atop a sliding shower door.
*Monorail cat is offline for maintainance
a caption to a picture of a sleeping kitten laying "monorail style".
*Monorail cat now carries more passengers.
a caption to a picture of a fat cat laying "monorail style"
by melissa* April 02, 2008
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