British, Australian (and other commonwealth or ex commonwealth countries such as India) term for a double (2 Oz. - 50ml) shot of spirits.
Customer: Give me a single malt.
Barman: Certainly, would you like a single or double peg.
Customer: Make it a double, I love a man who is generous with his peg!
Barman: Certainly, would you like a single or double peg.
Customer: Make it a double, I love a man who is generous with his peg!
by piratetony November 8, 2010

a beautiful young girl who is successful in everything she does. She seems shy at first but when you get to know her its hard to shut her up, shes clever, funny, beautiful, intelligent and witty. Dont get on the wrong side of a her. She is an amazing friend, a great listener and a great companion, if you ever meet one make sure you make her your friend because she's probably pure amazing. She normally has bright silky ginger hair in curls that flow down to her shoulder blades.
person 1: dude, who's that?
person 2: that's Lily-Peg
person 1: wow she's beautiful!
person 2: i know
person 2: that's Lily-Peg
person 1: wow she's beautiful!
person 2: i know
by edsheeranmad101 May 14, 2013

When a woman blindfolds her man before pegging him, then discreetly brings in another man to do the deed in her stead.
Paul thought Becky was using the blindfold and loud music to add ambiance to their weekly pegging. What he didn't know was that Black Rodney was quietly hiding in the closet waiting for her to let him take over and deliver Paul's first Switch Pegging.
by WECoyote September 4, 2021

by AwesomeSoft August 19, 2017

When someone "spits their dummy out", you catch the metaphorical dummy and peg them with it. Saying " you need to pick you dummy back up before I peg you with it"!
" if you spit your dummy out I'll peg you with it"
"Calm down or I'll peg you with that dummy you've spat out"
"Do you want dummy pegging"?!
"Calm down or I'll peg you with that dummy you've spat out"
"Do you want dummy pegging"?!
by The little brat March 29, 2023

To push a system to its limits; such that the system is at its maximum work output at which failure is more likely.
Despite the multi-core CPU and high capacity of RAM, the system started pegging out when the simulation began executing.
As he floored it, the car 's engine began to roar, and despite pegging out the RPM gauge beyond the red-line, the engine did not falter.
As he floored it, the car 's engine began to roar, and despite pegging out the RPM gauge beyond the red-line, the engine did not falter.
by afkam December 12, 2015
