monkey patch

/M AH1 NG K IY0 P AE0 CH/
noun
  1. 1

    (programming slang) A patch which alters the behaviour of a program by forcibly overriding aspects of the original code at runtime.

verb
  1. 1

    (programming slang, transitive) To alter the behaviour of a program by forcibly overriding aspects of the original code at runtime.