kill ‧ ing /ˈkɪlɪŋ/ BrE AmE noun [countable]
[ Word Family: noun : ↑ kill , ↑ overkill , ↑ killer , ↑ killing ; verb : ↑ kill ; adjective : ↑ killer ]
1 . the act of killing someone deliberately SYN murder :
a series of gangland killings
They murdered fifteen boys in a killing spree (=an occasion when someone murders many people in a short period of time) across southern California.
2 . make a killing informal to make a lot of money in a short time:
He made a killing on the stock exchange.