(law) a number that represents information which is illegal to possess, utter or propagate. Any information that can be represented in binary format is, ipso facto, representable as a number, and therefore if the information itself is illegal in some way, the pure number itself may be called illegal.

plural of illegal alien

plural of illegal immigrant

(mathematics) A prime number that encodes information that is illegal to possess or distribute.

plural of illegal prime

Alternative form of no human being is illegal

A person who engages in combat without meeting the requirements for a lawful belligerent according to the laws of war as specified in the Third Geneva Convention.

(sometimes offensive) A person who is within the boundaries of a political state without the authorization of the government of that state; a national of another country who has entered or stayed without permission.

(countable, offensive) Someone who has immigrated into a country by bypassing customs and immigration controls.

The migration of people across national borders in a way that violates the immigration laws of the destined country.