What is the meaning of Rubbish?

Refuse, waste, garbage, junk, trash.

An item, or items, of low quality.

Nonsense.

Debris or ruins of buildings; rubble.

Exceedingly bad; awful.

Used to express that something is exceedingly bad, awful, or terrible.

Used to express that what was recently said is nonsense or untrue; balderdash!, nonsense!

To criticize, to denigrate, to denounce, to disparage.

To litter.

Source: wiktionary.org