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 of casing

• sheath
• housing
• covering
• shell
• case

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

Police found discharged 9 mm casings in the apartment. —Mara H. Gottfried, Twin Cities, 24 Apr. 2026

In a search of the vehicle, investigators found shell casings matching those found at the scene and blood in the car’s backseat, according to the probable cause statement. —Caroline Zimmerman, Kansas City Star, 22 Apr. 2026

There were 20 shell casings found at the scene, including 17 9mm casings. —Joe Brandt, CBS News, 22 Apr. 2026

But the company’s newest laptop stands out by amping up the premium feel, thanks to a sturdier aluminum casing, a crisp touch screen, powerful speakers, and the option for a sleek black color way or silver. —Michael Kan, PC Magazine, 21 Apr. 2026

Word History

First Known Use

1791, in the meaning defined at sense 1

Rhymes for casing

• basing
• bracing
• chasing
• facing
• gracing
• lacing
• pacing
• placing
• racing
• spacing
• tracing
• debasing

Kids Definition

casing

noun

cas·​ing ˈkā-siŋ 

1

: something that encloses or surrounds

2

: a frame around a door or window opening