1
: something that encases : material for encasing: such as
a
: an enclosing frame especially around a door or window opening
b
: a metal pipe used to case a well
d
: a membranous case for processed meat
2
: a space formed between two parallel lines of stitching through at least two layers of cloth into which something (such as a rod or string) may be inserted
Examples of casing in a Sentence
a casing for a shotgun shell
the egg of this bird has an unusually hard casing
Recent Examples on the Web
During their investigation, police found six 10mm shell casings at the scene.
—
Kendrick Calfee, Kansas City Star, 3 June 2025
While the casing is mostly reinforced plastic, the screen surround is titanium.
—Andrew Williams, Forbes.com, 30 May 2025
Its thick plastic outer casing is impervious to flex.
—PC Magazine, 28 May 2025
The Artemis program’s rocket booster engines, casings, and main engines are all repurposed and refurbished from Space Shuttle craft.
—Andrew Paul, Popular Science, 15 May 2025
See All Example Sentences for casing
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Kendrick Calfee, Kansas City Star, 3 June 2025
While the casing is mostly reinforced plastic, the screen surround is titanium.
—Andrew Williams, Forbes.com, 30 May 2025
Its thick plastic outer casing is impervious to flex.
—PC Magazine, 28 May 2025
The Artemis program’s rocket booster engines, casings, and main engines are all repurposed and refurbished from Space Shuttle craft.
—Andrew Paul, Popular Science, 15 May 2025
See All Example Sentences for casing
Cite this Entry
“Casing.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/casing. Accessed 10 Jun. 2025.
Copy CitationKids Definition
casing
noun
cas·ing
ˈkā-siŋ 
1
: something that encloses or surrounds
2
: a frame around a door or window opening
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