garbage

Concise Oxford English Dictionary © 2008 Oxford University Press:
garbage/ˈɡɑːbɪʤ/

▶noun chiefly N. Amer.

• 1 rubbish or waste, especially domestic refuse.

• 2 something that is worthless or meaningless.

– phrases
garbage in, garbage out Computing, informal incorrect or poor-quality input will produce faulty output.

– origin ME (in the sense ‘offal’): from Anglo-Norman Fr., of unknown ult. origin.