- the delegates to the Constitutional Convention in Philadelphia in 1787.
- (often lowercase) any group of founders: the town's founding fathers.
- (often capitals) a person who founds or establishes an important institution, esp a member of the US Constitutional Convention (1787)
A general name for male American patriots during the Revolutionary War, especially the signers of the Declaration of Independence and those who drafted the Constitution. John Adams, Benjamin Franklin, Alexander Hamilton, Thomas Jefferson, James Madison, and George Washington were all Founding Fathers.