Definitions

1. noun

A person who is capable of killing others, often in a violent or brutal manner.

“The killer was caught by the police after a month-long investigation.”

2. adjective

Exceptionally good or excellent at something.

“He’s a killer at playing chess and always wins against his friends.”

3. verb

To kill or cause the death of someone or something.

“The virus was designed to kill all the bacteria in the petri dish.”

4. noun

A person or thing that causes great excitement or enthusiasm.

“The new movie was a killer at the box office.”