Code Temple
Noun · Slang & Abbreviations
Definitions
A part of the codebase treated with unusual respect, caution, or reverence. In engineering slang, code temple may describe genuinely excellent craftsmanship or an area people are too intimidated to improve.
In plain English: A part of the codebase treated with special reverence or caution.
Example: "The parser generator package had become a code temple, admired by everyone and modified by almost no one except the original maintainers."