What is the meaning of Dirty?

Unclean; covered with or containing unpleasant substances such as dirt or grime.

That makes one unclean; corrupting, infecting.

Morally unclean; obscene or indecent, especially sexually.

Dishonourable; violating accepted standards or rules.

Corrupt, illegal, or improper.

Out of tune.

Of color, discolored by impurities.

Containing data needing to be written back to memory or disk.

Carrying illegal drugs among one's possessions or inside of one's bloodstream.

Used as an intensifier, especially in conjunction with "great".

Sleety; gusty; stormy.

Of an alcoholic beverage, especially a cocktail or mixed drink: served with the juice of olives.

Of food, indulgent in an unhealthy way.

Spreading harmful radiation over a wide area.

Having the undercarriage or flaps in the down position.

In a dirty manner.

To make (something) dirty.

To stain or tarnish (somebody) with dishonor.

To debase by distorting the real nature of (something).

To become soiled.

Source: wiktionary.org