The word "slay" means to kill something or someone, especially in a fierce or skillful way. It can also be used informally to describe someone doing something exceptionally well or looking incredibly attractive or fashionable. Full definition
The family of slain Member of Parliament (MP) for Abuakwa North Joseph Boakye Danquah Adu have expressed delight at the arrest of a suspect in the gruesome killing. (ghanapoliticsonline.com)
For those that like the series, I see nothing here that will keep them from enjoying countless more hours of slaying in their futures. (darkstation.com)
You generally won't be buying new equipment in this game; you'll be crafting and upgrading them using parts you carve off of slain monsters. (tomsguide.com)