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Idiom

brass monkeys

noun (plural, idiomatic) C1
/bræs ˈmʌŋkiz/

Meanings

noun (plural, idiomatic)

Used in an informal expression to mean extremely cold weather.

Visual cue for brass monkeys — meaning 1

Definition

“Brass monkeys” is used in the expression “cold enough to freeze the balls off a brass monkey,” meaning extremely cold weather.

“Brass monkeys” most commonly appears in a humorous, informal saying about intense cold. It emphasizes that the temperature feels brutally freezing, not just chilly. The phrase is slangy and can sound crude because it includes a vulgar variation with “balls.” Use it carefully depending on your audience.

Examples

  • It was brass monkeys outside this morning, so I wore two layers.
  • We canceled the hike because it was brass monkeys on the mountain.
  • After sunset it turned brass monkeys, and the car windows frosted over.
  • I can’t believe you’re running in brass monkeys weather.