What is the meaning of Forgery?

The act of forging metal into shape.

The act of forging, fabricating, or producing falsely; especially the crime of fraudulently making or altering a writing or signature purporting to be made by another, the false making or material alteration of or addition to a written instrument for the purpose of deceit and fraud.

That which is forged, fabricated, falsely devised or counterfeited.

An invention, creation.

Source: wiktionary.org