casing

American  

[key-sing] / ˈkeɪ sɪŋ /

noun

1. a case or covering; housing.

2. material for a case or covering.

3. the framework around a door or window.

4. the outermost covering of an automobile tire.

5. any frame or framework.

6. a steel pipe or tubing, especially as used in oil and gas wells.

7. a layer of glass that has been fused to an underlying layer of glass of a different color or of different properties.

8. the thin, tubular membrane of the intestines of sheep, cattle, or hogs, or a synthetic facsimile, for encasing processed meat in making sausages, salamis, etc.

9. Nautical. the walls surrounding a funnel.

10. a channel created in a garment or other article to carry a drawstring or elastic, as by sewing a strip of cloth to the basic material with two parallel rows of stitches.

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casing British  

/ ˈkeɪsɪŋ /

noun

1. a protective case or cover

2. material for a case or cover

3. Also called: case.  a frame containing a door, window, or staircase

4. the intestines of cattle, pigs, etc, or a synthetic substitute, used as a container for sausage meat

5. the outer cover of a pneumatic tyre

6. a pipe or tube used to line a hole or shaft

7. the outer shell of a steam or gas turbine

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Other Word Forms

• undercasing noun

Etymology

Origin of casing

First recorded in 1565–75; case ² + -ing ¹

Example Sentences

Police found a damaged wing mirror casing on the road and traced the serial number to Clarke-Samuel's vehicle.

From BBC • Mar. 3, 2026

Cartridge casings recovered near the Utah crime scene were matched through a federal database to an expended casing previously found during a search of Buzzard’s home in Vandenberg Village.

From Los Angeles Times • Dec. 26, 2025

They fanned out across the property, searching a small cave for a weapons cache and cautiously casing sleeping quarters.

From Los Angeles Times • Nov. 6, 2025

"Using the burnt material that remains on the surface of the casing as a stencil, we can deposit specific materials in between the gaps, allowing for the visualisation," said Dr. McKeever.

From Science Daily • Nov. 2, 2025

They were all silent for a minute; then Ellen went to the door, lifted the gun that was held on hooks above the casing, and laid it carefully on the floor beside the bed.

From "Across Five Aprils" by Irene Hunt

Related Words

• skin
• wrapper