nut house

or nut·house

SEE MORE SYNONYMS FOR nut house ON THESAURUS.COM

noun Slang.

a mental hospital; insane asylum.

Origin of nut house

First recorded in 1900–05

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for nuthouse

Contemporary Examples of nuthouse

So Peggy calls 911 and gets the loony copywriter sent off to the nuthouse.
Mad Men’s ‘The Runaways’: Three-Way Sex and Self-Mutilation in the Craziest Episode Yet
Marlow Stern
May 12, 2014

Historical Examples of nuthouse

I won't say I like this place—your world or the nuthouse entrance to it.
Shock Treatment
Stanley Mullen

British Dictionary definitions for nuthouse

nuthouse

noun

slang a mental hospital or asylum

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