cold spell

== English == === Etymology === From cold +‎ spell (“period of time”). === Noun === cold spell (plural cold spells) (weather) A short period during which temperatures are much lower than usual. Synonyms: cold wave, cold snap Antonym: heatwave (figuratively) A period of poor performance. Coordinate term: dry spell === References === “cold spell” in Longman Dictionary of Contemporary English, Longman. “cold spell” (US) / “cold spell” (UK) in Macmillan English Dictionary.