Code Mountain
Noun · Slang & Abbreviations
Definitions
A daunting volume of code or technical work that has to be climbed through gradually. In engineering slang, code mountain emphasizes the size of the task more than the weirdness of the terrain.
In plain English: A very large amount of code or coding work to get through.
Example: "The migration backlog was a code mountain, and the team made progress only after breaking it into realistic camps instead of pretending it was one weekend project."