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
James Hill, ABC News, 12 Dec. 2025
The ruthless annihilating self-criticism silenced by looking into your big brown eyes, a mirror and a time machine.
—Hannah Sacks, PEOPLE, 12 Dec. 2025
Sharon Bernstein, Sacbee.com, 13 Dec. 2025
Across fixtures which mirror the opening half-a-dozen matches of the first team’s Champions League campaign, Newcastle were defeated on every occasion.
—Chris Waugh, New York Times, 12 Dec. 2025
See All Example Sentences for mirror
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Noun
There's a selfie photo of Bannon with Epstein, apparently taken by Epstein on a mobile phone as the pair stand in front of a mirror, and another of Bannon sitting across from Epstein at a desk.
—James Hill, ABC News, 12 Dec. 2025
The ruthless annihilating self-criticism silenced by looking into your big brown eyes, a mirror and a time machine.
—Hannah Sacks, PEOPLE, 12 Dec. 2025
Verb
The case, which is mirrored in other states including Illinois and Oregon, has provided a roller-coaster of rulings and counter-rulings, as lower court judges have issued orders that are then modified, overturned or paused by appellate courts.
—Sharon Bernstein, Sacbee.com, 13 Dec. 2025
Across fixtures which mirror the opening half-a-dozen matches of the first team’s Champions League campaign, Newcastle were defeated on every occasion.
—Chris Waugh, New York Times, 12 Dec. 2025
See All Example Sentences for mirror
Cite this Entry
“Mirror.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mirror. Accessed 15 Dec. 2025.
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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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