brass monkey
Very cold.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
“It's brass monkey outside today.”
“Turn the heating on because it is brass monkey in this office.”
“We wanted to go for a walk, but it was brass monkey, so we stayed in.”
“You should wear your thickest coat because it is brass monkey on the train platform this morning.”
“The water in the lake was brass monkey, so only the bravest swimmers jumped in for a dip.”
“The wind howled through the empty streets, and by midnight it was brass monkey, forcing even the stray cats to seek shelter.”
first recorded 19th c. disputed origin
From the phrase cold enough to freeze the balls off a brass monkey. According to the U.S. Naval Historical Center, which cites the Random House Historical Dictionary of American Slang, 'the first recorded use of the term "brass monkey" appears to dates^([sic]) to 1857 when it was used in an apparently vulgar context by C.A. Abbey in his book Before the Mast in the Clippers, where on page 108 it says "It would freeze the tail off a brass monkey."' A number of false etymologies have been suggested. For more information, see brass monkey on Wikipedia.Wikipedia
- 01
as clever as a cartload of monkeys
Very clever, cunning or mischievous.
- 02
barrel of monkeys
Someone or something very amusing or funny, fun, mischievous, etc.
- 03
bow-legged wi' brass
Wealthy; having lots of money.
- 04
brass ceiling
An unwritten, uncodified barrier to promotion or progression for women in law enforcement or the military.
- 05
brass farthing
Something worthless or of small value.
- 06
brass monkeys
Very cold.
- 07
brass neck
Gall, shamelessness, cheek.
- 08
cheeky monkey
An impudent person, usually a child.
Last updated August 10, 2026