Killday 

Noun; A person who is a complete buzzkill, has no trust in anyone, and goes out of his or her way to ruin an event in which he or she is unhappy with.

Wow she ruined our party because she was going to be out of town. What a Killday!

Killday by BushLover10 July 21, 2011

kiloday 

An alternative form of birth celebration, in contrast to the traditional birthday. Each kiloday is 1000 days apart, starting at birth.

They say I'm 27, but I'm just 10 kilodays. Feeling young!

kiloday by ZuderDuder October 8, 2013

Killdanium 

1. The strongest metal for killing in the world! Found in the online comic "Irritability."

The radom superhero weilded a sword of solid Killandium, causing Exoth to assume he was a sort of serial killer.

Killdanium by Beat The Mighty June 13, 2003

KillGay 

anti homosexual term mening to kill gays

whenever you see a man wearing pink or takin it in the butt shout killgay

KillGay by William Jefferson Clinton November 4, 2003

killway

Long hallway or confined space where a shooter would have ease taking out the person/people in the killway.
"

"Dont stand in that killway!"

killway by jaqk August 8, 2019

kilday 

This is a rude person Kildare often gets headaches but is nice sometimes she is always complaining

Kilday was being so rude today because of her headache

kilday by Ladylaide November 3, 2021

kill day

Its where you take a Firearms / weapon to a school and kill kids and teachers and its on NOV 14

BRO TODAY IS KILL DAY WE CAN NOT GO TO SCHOOL!

kill day by skeleton_NOT_corpse November 13, 2023