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A Data Definition Language is a computer language for defining data structures.
Billy: What is DDL?

Bob: It is a computer language for defining data structures.
DDL by Josh Grime June 23, 2007
Related Words
Stands for Drop Dead Laughing. It's the new LOL.
Friend 1: I glass bottom boated that bitch last night
Friend 2: DDL!!!!1!1
ddl by flexy mutha fucking lexy October 30, 2005
abbreviation for down down low, which is an extreme form of the rather common dl or down low, referring to the necessity of keeping a juicy tidbit of information hushed up.
"Whoa, you hooked up with HIM?!?!?!?!"
"Yeah, but let's keep it on the ddl. He's pretty skeevy. I was too drunk to know what I was doing."
"Oh, okay, I won't say a word."
ddl by e-nizzle March 2, 2004
Slang for Dirty Damn Liar
Barb: "Hello, I just got back from China!"
Dave: "Oh can it, you DDL!:
DDL by NotOBF July 16, 2008
Everyone is going to ddl at this party tomorrow
DDL by Tdog73829384 July 3, 2019