Kill/kɪl/ Definition 1 of 6Pro Tip 1/3Not Always Violent The word 'kill' can be used non-violently to mean causing plants or engines to stop functioning. I think I killed the engine; it won't start anymore. Pro Tip 2/3Unintentional Death 'Kill' doesn't always imply intent; accidents causing death also use the word 'kill'. The man was killed in a tragic car accident. Pro Tip 3/3Metaphorical Use 'Kill' can be used metaphorically for something that eliminates or quashes possibilities. His poor attitude killed his chances of promotion.