casing

noun

cas·​ing ˈkā-siŋ 

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

c

: tire entry 2 sense 1

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

Synonyms

• armor
• capsule
• case
• cocoon
• cover
• covering
• encasement
• housing
• hull
• husk
• jacket
• pod
• sheath
• shell

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

Authorities recovered a gun, a magazine containing 40 caliber rounds, a bucket of 40 caliber ammunition, and two 40 caliber shell casings. —Cale Ahearn, Baltimore Sun, 21 Jan. 2025

The bullet casings used as evidence in the case were provided to police by Ephron. —Joseph Wilkinson, New York Daily News, 21 Jan. 2025

Officers who responded to the scene did not find any shell casings. —Nancy Dillon, Rolling Stone, 21 Jan. 2025

So, Butter Caramel has a vibrant yellow shell and a deep beige interior, while Mint Strawberry looks like a cool blue on the casing and a muted light pink inside. —John Burek, PCMAG, 14 Jan. 2025

Word History

First Known Use

1791, in the meaning defined at sense 1

Kids Definition

casing

noun

cas·​ing ˈkā-siŋ 

1

: something that encloses or surrounds

2

: a frame around a door or window opening