Christmas Tree Code
Noun · Slang & Abbreviations
Definitions
A joking term for code with so much indentation, nesting, branching, or visual clutter that it resembles the layered shape of a Christmas tree. It is usually criticism of overly nested control flow or unreadable structure.
In plain English: Code with so much nesting and indentation that it is visually hard to follow.
Example: "That parser became Christmas tree code after five levels of nested conditionals and exception handling."