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

Investigators recovered shell casings and two handguns from the residence, according to court documents. — Nathan Pilling, Kansas City Star, 27 June 2026

Evidence markers covered at least three shell casings in the road near the cars. — Charlie De Mar, CBS News, 27 June 2026

However, many of the casings would miss their target and land on the flight line, creating hazards for other aircraft. — Chris Young, Interesting Engineering, 26 June 2026

Police recovered a handgun, a fake handgun and six shell casings at the shooting scene, the report stated, as well as a grocery bag of e-cigarettes. — Tess Kenny, Chicago Tribune, 26 June 2026

Word History

First Known Use

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