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

Wilson County Sheriff’s Office detectives also found seven shell casings. —Andy Humbles, Nashville Tennessean, 14 Oct. 2025

It's frequently served rolled into sausage-and-rice balls called boudin balls or stuffed into a casing like other sausage preparations. —Elizabeth Mervosh, Southern Living, 12 Oct. 2025

Once harvested, nuts must be washed and dried and removed from their shell and, for some types of nuts, first from an exterior husk or other casing. —Jenna Prestininzi, Freep.com, 9 Oct. 2025

After the assassination, reports emerged that bullet casings recovered from the shooting contained references to internet memes and the video game Helldivers 2. —Time, 8 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