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.

(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.

(video games) An electronic game that has compelled many to buy a particular video game console or upgrade their computer hardware simply to play it.

plural of killer

(archaic) third-person singular simple present indicative form of kill

(immunology) A cytotoxic T cell.

plural of killer cancel

plural of killer T cell

A person who contracts to kill a specified person for an agreed sum of money.

(immunology) A natural killer cell