1
: a polished or smooth surface (as of glass) that forms images by reflection
She looked at herself in the mirror.
2
a
: something that gives a true representation
… the press as a mirror of public opinion …—
C. G. Bowers
C. G. Bowers
b
: an exemplary model
The building is a mirror of functionality.
mirrored; mirroring; mirrors
1
: to reflect in or as if in a mirror
The clouds were mirrored in the lake.
2
: resemble
His mood mirrored the gloomy weather.
Examples of mirror in a Sentence
Noun
breaking a mirror is supposed to bring seven years of bad luck
Verb
The building was mirrored in the lake.
the still waters of the pond mirroring the cloudless sky above
Recent Examples on the Web
Lucy Maguire, Vogue, 23 June 2026
It is adorned with leather armchairs by Oscar Niemeyer, vintage carpets, a midcentury Kalmar glass chandelier, mirrors by Gio Ponti, and a red desk by Carlo Scarpa, resulting in a warm, cozy feel throughout.
—Rachel Cormack, Robb Report, 22 June 2026
Alexandra Skores, CNN Money, 24 June 2026
As these systems begin to mirror and amplify human intelligence, agency, and even our flaws, the stakes become existential.
—Dana Taylor, USA Today, 23 June 2026
See All Example Sentences for mirror
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Noun
And this season at Pitti Uomo and Milan Fashion Week Men’s, as a heatwave struck Europe and the looksmaxxing movement circulating around GLP-1s and peptides continues to shift body ideals, runways and presentations held a mirror up to our changing world.
—Lucy Maguire, Vogue, 23 June 2026
It is adorned with leather armchairs by Oscar Niemeyer, vintage carpets, a midcentury Kalmar glass chandelier, mirrors by Gio Ponti, and a red desk by Carlo Scarpa, resulting in a warm, cozy feel throughout.
—Rachel Cormack, Robb Report, 22 June 2026
Verb
The situation mirrored some of the challenges US airlines faced this year with the spike in jet fuel prices caused by the war with Iran.
—Alexandra Skores, CNN Money, 24 June 2026
As these systems begin to mirror and amplify human intelligence, agency, and even our flaws, the stakes become existential.
—Dana Taylor, USA Today, 23 June 2026
See All Example Sentences for mirror
Cite this Entry
“Mirror.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mirror. Accessed 24 Jun. 2026.
Copy CitationKids Definition
Medical Definition
mirror
noun
mir·ror
ˈmir-ər 
: a polished or smooth surface (as of glass) that forms images by reflection
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