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

Robinson also explained the obscure engravings found on bullet casings that were left behind at the scene. —Connor Greene, Time, 17 Sep. 2025

Authorities also revealed bizarre engravings on unfired shell casings recovered at the scene. —Amber Corrine, VIBE.com, 16 Sep. 2025

In it were multiple shell casings with etched inscriptions that appeared to reference internet memes. —Kevin Breuninger,christina Wilkie, CNBC, 16 Sep. 2025

The other references on the bullet casings referenced popular memes, some dating back over a decade. —Brady Knox, The Washington Examiner, 15 Sep. 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