black frost

== English == === Noun === black frost (countable and uncountable, plural black frosts) (botany, meteorology) Cold so intense as to freeze vegetation and turn it black, without the formation of hoar frost. Synonym: killing frost (chiefly nautical) A mist of very cold droplets that freeze upon impact and coat objects (such as parts of a ship) with ice, potentially causing a ship to capsize. ==== Coordinate terms ==== ==== Translations ====