black frost


noun

intense cold without hoarfrost, causing vegetation to turn black.Compare frost(def 2).

Origin of black frost

First recorded in 1700–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for black frost

black frost

noun

a frost without snow or rime that is severe enough to blacken vegetation
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012