noun
garbage; unnecessary information
Computing term for data that is no longer needed, invalid, or meaningless; often refers to memory or storage that can be freed.
不要情報を削除してディスクの空き容量を増やした。
I deleted unnecessary information to free up disk space.
メモリ上の不要情報を定期的に回収する仕組みをガベージコレクションと呼ぶ。
The mechanism that periodically collects garbage in memory is called garbage collection.
Compound of 不要 (unnecessary) and 情報 (information). The exact origin is uncertain, but it is a straightforward technical term likely coined in computing contexts.