tuerie

/ty.ʁi/
1.
nounfeminine

massacre

slaughter

killing spree

La tuerie survenue la nuit dernière a traumatisé toute la communauté.

The massacre that occurred last night traumatized the whole community.

2.
nounfeminine

something outstanding; extremely good (informal, often about food or entertainment)

Le nouveau burger du resto est une vraie tuerie — faut absolument y aller.

The restaurant's new burger is amazing — you absolutely have to go.