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15.
verb, intrans., UK. To bother or make an effort, esp. in the negative.
"I was supposed to hand in an essay by tuesday, but I couldn't be arsed to write it".
by R. Clayton Jr November 29, 2005
 
16.
A term used by people who don’t like calling people straight out assholes.
Why do you need to be such an arse?
by Unnamed October 10, 2003
 
17.
1) The Anal Retentive Society of Earners
known by many for their one meeting that never ended, and is rumored to still be continuing to this day.

2) An English derogatory term for one who is being an ass. Basically, it is just an ass with an accent
Willoby is an arse

Let's never go to the ARSE convention
by Heather P. September 17, 2003
 
18.
ARSE: An alternate name for the human enzyme Arylsulfatase E coded by the ARSE gene.
"Could you please hand me that jar of ARSE."
"I think your ARSE gene is acting up."
by WreckedEm November 14, 2009
 
19.
"Arse" n. 1. Arse is usually a derogatory term used to label one's posterior or backside or bum or what have you and 2. Arse can be used with the same derogatory inference to describe a person.

In Australian variation English, depending on the context, "arse" might connote something with a more neutral inference adding humour to the flavour of a discussion.

In American variation English, "arse" is usually written and pronounced "ass". In Standard English, "ass" connotes mules or donkeys.

As English has become the 'international language' and many countries have adopted English as their national language as a consequence of British imperialism, particularly in the 18th and 19th centuries, over time the language has been adapted to the local landscape and been shaped by various influences. Examples like the 'arse/ass' dichotomy abound.

In Australia, no one gets upset if they are asked if they are "crook". Americans rebound in insulted horror at the use of the word "crook" to describe their well-being.
ex 1. My arse hurts.

ex 2. He's a silly arse.

ex 3. She's good looking, got a great personality, and she's got a nice arse, too.

ex 4. "There are no horses, so you will have to ride on the back of that ass", Joseph said to Mary.

ex 5. David was crook. He raced off into the bush. Later, I gave him some tablets to ease his stomach. But, he told me, he had a bug in his arse.

by Daza May 07, 2008
 
20.
Arse is a British English and Hiberno-English term or vulgarism for the buttocks, equivalent to the American English "ass"
Old English ærs, ears, from Proto-Germanic arsaz.

Cognate with German Arsch.

Ultimately from Proto-Indo-European orse (“backside, buttocks”)
Arse over tit beats head over heels any day!
by goblob March 09, 2011
 
21.
n. Chiefly British Slang
The body excluding the head, neck, limbs and torso. Mistaken by some for the elbow.
David, move your arse an' let yer betters pass, you Swabian son of a sow
by Martin Burns September 09, 2007