Definitions of forge:

• noun:   a workplace where metal is worked by heating and hammering
• noun:   furnace consisting of a special hearth where metal is heated before shaping
• verb:   make a copy of with the intent to deceive

  Example: "She forged a Green Card"

• verb:   create by hammering

  Example: "Forge a pair of tongues"

• verb:   move or act with a sudden increase in speed or energy
• verb:   move ahead steadily

  Example: "He forged ahead"

• verb:   make out of components (often in an improvising manner)
• verb:   come up with (an idea, plan, explanation, theory, or priciple) after a mental effort
• verb:   make something, usually for a specific function
• name:  A surname (very rare: popularity rank in the U.S.: #38013)