# casing

Pronunciation: say "KAY-sing" /ˈkeɪsɪŋ/

## Noun

1. An outer cover or shell that encloses and protects something inside it.
   - Simple: A cover or shell that holds something inside and keeps it safe.
   - _The engine's metal casing protects the moving parts from dirt and water._
   - _Workers pried open the steel casing around the cables._
2. Decorative trim that frames the edges of a door or window.
   - Simple: The wooden or plastic trim that frames a door or window.
   - _The carpenter installed fresh casing around every window in the room._
   - _Wide casing gave the doorway a finished, formal look._
4. In drilling, the metal piping inserted into a borehole to line the well.
   - Simple: A metal pipe that lines the hole of a well to stop it from caving in.
   - _Crews cemented the casing in place before drilling deeper._
   - _A crack in the casing let groundwater seep into the well._
5. The arrangement of uppercase and lowercase letters across a phrase or several lines of text.
   - Simple: Whether letters are written as capitals or small letters across a piece of text.
   - _The function normalizes the casing before comparing two strings._
   - _Inconsistent casing across the headings made the page look sloppy._

## Verb

3. Present participle and gerund of case. — present participle and gerund of case
   - Simple: Present participle of case. Use this form for the action happening right now.
   - _The factory workers are casing fresh sausages on the line._
   - _Burglars were casing the building for weeks before the break-in._

## Noun

6. A rubber tire fitted around a wheel. *(dated, Appalachia)*
   - Simple: A rubber tire that fits around a wheel.
   - _The mechanic replaced the cracked casing on the front wheel._
   - _Spare casings were strapped to the running board for the journey._

Source: DictionaryAI, https://dictionaryai.com/define/casing (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).