/gi'goh/ [acronym] 1. `Garbage In, Garbage Out' --- usually said in response to lusers who complain that a program didn't complain about faulty data. Also commonly used to describe failures in human decision making due to faulty, incomplete, or imprecise data. 2. `Garbage In, Gospel Out' this more recent expansion is a sardonic comment on the tendency human beings have to put excessive trust in `computerized' data.