It originated in Africa, It was a name of a river in Kenya. It also could mean to the English Kill-everything-I-see. The cutest last name a person could have.
Girl : Kilasi look fine ass hell..
Girl 2: "Word up look at his tall self, and he play sports....
All together: "Its a wrap"
Man 1 "Did you see that Killar yesterday?"
Man 2 "Yup she was really hot so I let her rape me. She was on top of me so I couldn't do anything sexual to her. The hottest thing was that she had knife to my throat while demanding me more."