A number of sites in Cambodia where mass slaughter of some 2,000,000 people was carried out by the Khmer Rouge in the late 1970s.

A technological product that is so good, or so innovative, that it is irresistible to potential customers; especially a software product that persuades people to buy the hardware needed to use it.

(baseball, slang) A double play.

(informal, computing) A killer application.

A person who commits multiple (more than two) murders, especially similar ones with no obvious motive over a period of time with a "cooling-off" period between each murder.

Alternative spelling of killjoy

Alternative spelling of kilolitre One thousand liters.

(computing) Any method of inducing physical harm to a computer or peripheral by software means, especially by inserting invalid values into a control register or by building up harmonic oscillations in a hard disk, etc.

A measure of the strength of an explosion or a bomb based on how many thousand tons of TNT would be needed to produce the same energy. / One thousand tons.

A pin, somewhat similar in shape, though larger than, a safety pin or bobby pin, which is inserted through the outer, front apron, or through both aprons of a kilt or a kilt-skirt.