casing

1 of 2

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

casing

2 of 2

present participle of case entry 3

Synonyms of casing

Noun

• sheath
• housing
• covering
• shell
• case

Examples of casing in a Sentence

Noun

a casing for a shotgun shell

the egg of this bird has an unusually hard casing

Recent Examples on the Web

Noun

Police said the rounds appeared to be the same color and caliber as the casings found at the shooting scene. — Nathan Pilling, Kansas City Star, 24 Sep. 2026

Engineers at Idaho National Laboratory have brought a custom dismantling rig online to peel the metal casings off radioactive fuel rods. — Aman Tripathi, Interesting Engineering, 24 Sep. 2026

Police previously reported recovering more than 100 shell casings on and beneath the bridge. — Matthew Ablon, CBS News, 22 Sep. 2026

The Apple Watch Ultra 4 comes in one size (49mm), one casing material (titanium), and one wireless configuration (GPS and cellular) for $799, the same as the Ultra 3. — Will Greenwald, PC Magazine, 18 Sep. 2026

Word History

First Known Use

Noun

1791, in the meaning defined at sense 1

Rhymes for casing

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

Kids Definition

casing

noun

cas·​ing ˈkā-siŋ 

1

: something that encloses or surrounds

2

: a frame around a door or window opening