1
: a massive hard dark quartz that produces a spark when struck by steel
2
: an implement of flint used in prehistoric cultures
3
a
: a piece of flint
b
: a material used for producing a spark
especially
: an alloy (as of iron and cerium) used in lighters
4
: something resembling flint in hardness
Examples of flint in a Sentence
the flint in a cigarette lighter
Recent Examples on the Web
It is related to similar words in other Germanic languages, such as Old High German flins and Old Norse flint, which also referred to hard stones or rock.
—
Erik Kain, Forbes, 15 Jan. 2025
First, they were made of basalt, rather than flint — a standard material for chopping tools such as axe heads from that same era.
—Paul Smaglik, Discover Magazine, 8 Jan. 2025
The pits were used to extract chalk and flint during the Roman era in England during the first century A.D. and were later backfilled.
—Irene Wright, Miami Herald, 8 Jan. 2025
An examination of the engravings under a laser microscope found grooves that looked like they were made by flint tools.
—Sonja Anderson, Smithsonian Magazine, 18 Dec. 2024
See all Example Sentences for flint 
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Erik Kain, Forbes, 15 Jan. 2025
First, they were made of basalt, rather than flint — a standard material for chopping tools such as axe heads from that same era.
—Paul Smaglik, Discover Magazine, 8 Jan. 2025
The pits were used to extract chalk and flint during the Roman era in England during the first century A.D. and were later backfilled.
—Irene Wright, Miami Herald, 8 Jan. 2025
An examination of the engravings under a laser microscope found grooves that looked like they were made by flint tools.
—Sonja Anderson, Smithsonian Magazine, 18 Dec. 2024
See all Example Sentences for flint
Dictionary Entries Near flint
Cite this Entry
“Flint.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flint. Accessed 14 Feb. 2025.
Copy CitationKids Definition
flint
noun1
: a hard dark quartz that produces a spark when struck by steel
2
a
: a piece of flint
b
: an alloy (as of iron and cerium) used for producing a spark in lighters
3
: something very hard
a heart of flint
flintily
adverb
ˈflint-ᵊl-ē
flintiness
noun
ˈflint-ē-nəs
flinty
adjective
-ē
Geographical Definition
Flint
geographical name
1
river 265 miles (426 kilometers) long in western Georgia flowing south and southwest into Lake Seminole
2
city in southeast central Michigan north-northwest of Detroit population 102,434
3
or Flintshire
ˈflint-ˌshir 
administrative area of northeastern Wales bordering England and the Irish Sea area 169 square miles (438 square kilometers), population 152,506
-shər
Biographical Definition
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