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
Researchers also found anvils, hammerstones, flint tools and traces of fire at the site, reports New Scientist’s James Woodford.
—
Sarah Kuta, Smithsonian Magazine, 11 July 2025
Later, Neanderthal artisans broke the bone and reused it for crafting flint tools—a process known as retouching.
—Andrew Paul, Popular Science, 9 July 2025
Unique and task-specific options include a fire-starting flint, a ruler with magnetic grabber, a mini-plier, a small brush and a multi-size bicycle spoke wrench.
—New Atlas, 7 July 2025
More than 120,000 small bone fragments and over 16,000 flint tools and other artifacts were recovered from just 500 square feet.
—Jenny Lehmann, Discover Magazine, 7 July 2025
See All Example Sentences for flint
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Sarah Kuta, Smithsonian Magazine, 11 July 2025
Later, Neanderthal artisans broke the bone and reused it for crafting flint tools—a process known as retouching.
—Andrew Paul, Popular Science, 9 July 2025
Unique and task-specific options include a fire-starting flint, a ruler with magnetic grabber, a mini-plier, a small brush and a multi-size bicycle spoke wrench.
—New Atlas, 7 July 2025
More than 120,000 small bone fragments and over 16,000 flint tools and other artifacts were recovered from just 500 square feet.
—Jenny Lehmann, Discover Magazine, 7 July 2025
See All Example Sentences for flint
Cite this Entry
“Flint.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flint. Accessed 23 Jul. 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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