killer 

(adj) really badass

I've got a new identity. It's going to be killer.

killer by JenkaDicto October 12, 2016

killer 

very cool

That laser light show was killer!

killer by Bungalow Bill December 12, 2001

killer 

O.J. Simpson

(person 1) should i get the apple juice or the orange juice?
(person 2) i'd go for the apple juice cuz the oj is killer

killer by tripp296 December 29, 2008

killer 

Excellent,outstanding,extreemely satisfying.Very powerfull.All you can take.

Have you tried the burgers at the new choke and puke? They are killer.
That was one killer movie we say last night.

killer by wright July 15, 2008

killer 

A name given to someone who suddenly becomes over agressive and violent.

Woa slow down killer!

killer by Matt Mcelhinney September 18, 2005

killer 

an adjective used to describe high quality thc based substances.

damn, those are some killer thai sticks.

killer by toomuchtime September 28, 2005

Killer 

A nickname U.S. Marines call eachother.

This term used to be an insult during the post-Vietnam era when servicemembers came home to being called "baby killers". It was turned around and made positive.

"Hey killer."

"Woah slow down there, killer"

"MUZZLE AWARENESS, KILLER!"

Killer by jaynahc April 6, 2009