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bosh

1 American  
[bosh] / bɒʃ /

noun

  1. absurd or foolish talk; nonsense.

bosh 2 American  
[bosh] / bɒʃ /

noun

Metallurgy.

  1. the section of a blast furnace between the hearth and the stack, having the form of a frustum of an inverted cone.

bosh 1 British  
/ bɒʃ /

noun

  1. the lower tapering portion of a blast furnace, situated immediately above the air-inlet tuyères

  2. the deposit of siliceous material that occurs on the surfaces of vessels in which copper is refined

  3. a water tank for cooling glass-making tools, etc

  4. dialect a kitchen sink or wash basin

"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
bosh 2 British  
/ bɒʃ /

noun

  1. informal empty or meaningless talk or opinions; nonsense

"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

Etymology

Origin of bosh1

1830–35; < Turkish boş empty; popularized from its use in the novel Ayesha (1834) by British author James J. Morier (1780–1849)

Origin of bosh2

1670–80; probably < German; akin to German böschen to slope, Böschung slope, scarp

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He is also known for his social media videos encouraging people to think positively, which typically end with a trademark "bosh".

From BBC

Fisher - who is famous for his love of Chinese takeaway and his signature catchphrase "bosh" - arrived in Western Australia on Tuesday ahead of a tour of the country.

From BBC

Fisher – thanks in large part to his social media star father 'Big John' and their 'bosh' catchphrase - is one of domestic boxing's biggest ticket sellers.

From BBC

The government has decided not to bosh on with this immediately, and instead return to it after the Easter recess.

From BBC

“Oh, bosh,” she replied, “you looked quite different when I saw you before.”

From Literature

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.