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

According to the outlet, casings found outside the building suggest the shooting began outside and then continued inside the apartment, but an investigation into the exact circumstances continues. — Adam England, PEOPLE, 13 Aug. 2026

Google goes for simplicity with its Pixel Watches, featuring a circular design with a twistable, pressable crown and a multipurpose button flush with the watch's casing. — Will Greenwald, PC Magazine, 12 Aug. 2026

Its front door was six inches too short for its frame and outfitted with a bathroom push knob instead of a lever handle, almost as if the original slab had been blown from its casing by an internal explosion. — Literary Hub, 11 Aug. 2026

The suspects escaped, and investigators later recovered the officer's Charger with a broken window and damage to its steering column, along with numerous 9mm shell casings, Fox 29 reported. — Stepheny Price, FOXNews.com, 11 Aug. 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