a killing 'frost' [=weather that is so cold that the frost kills plants]
These plants should bloom until the first 'frost' of the season.
I have to 'frost' the birthday cake.
(..) - Whisper to them that I live only to hold them again. At least give me a clean death. A soldier's death. The frost, sometimes it makes the blade stick. Praetorian! Hyah! Hyah! Remember the last time you were home? Two years, days, and this morning. (..)2000 Gladiator