A: The the type of firearm which fires a .45 calibur, .45 of an inch wide, bullet. The origonal firearm capable of firing this round, the Colt 1911A1, was designed by the Colt Firearms Company in 1911. Due to the weapon's high-power, which is more powerful than a 9 milimeter round, the .45 calibur bullet is able to stop a potential assailant. Due to this capability, the weapons calibur has become quite popluar with law-enforcment, security, and even Military groups.
A: I pulled out my Forty-Five and popped a cap in that White-Boy.
by Robotsforabe October 28, 2003
traditionaly used as the number after 44 and before 46 the number fortyfive in recent years has developed into a standard unit of measure.
since a small northern boy adopded the number as a multipurpose, multifunctional unit of measure, the number has taken over in the north west of england.
no longer when asked what age you are?, what time it is? or how much is that? do you stumble and bumble as you try to scrape those math lession memories to establish the correct unit.
Simpe now reply in a confident manor 'fortyfive'
You may find in a shop or public place if informed that something yourself is actually 'fortyfive', then a moment is required to compose yourself as to not explode hystericly in laughter in the informants face.
have you seen the size of that, how big do you wreckon it is?
REPLY 'fortyfive' i think
by 91gilles July 20, 2011
a sex act in which a man bend his partner over a sturdy object such as a table. While penetrating from behind, the man puts one foot on the table while leaving the other on the floor.
This leaves the leg that is up at a 45 degree angle relative to the floor.
To derive more force and depth from my thrusts and thus better unleash the fury, I gave her the forty-five.
by Sir D November 22, 2003

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