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

• 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

Incidentally, the berries — technically seeds with a casing — do contain toxins and should be handled only with gloves. —Ariane Lange, Sacbee.com, 28 Oct. 2025

Open alcohol containers and six additional shell casings were found at the original crime scene, according to the release. —Shannon Tyler, Idaho Statesman, 25 Oct. 2025

McGoey pointed to the importance of shell-casing analysis, phone records and property checks to determine whether the crime was personal or financial. —Stepheny Price , Ashley Papa, FOXNews.com, 24 Oct. 2025

No shell casings were found in the vehicle. —Caroline Zimmerman, Kansas City Star, 24 Oct. 2025

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