Definition of turnbuckle. : a device that usually consists of a link with screw threads at both ends, that is turned to bring the ends closer together, and that is used for tightening a rod or stay.
Such splintering had not yet led to formal party organization, but later the faction led by Andrew Jackson would evolve into the Democratic Party, while the factions led by John Quincy Adams and Henry Clay would become the National Republican Party and later the Whig Party.
He was a close friend and advisor of George Washington in the first years of his presidency. With Thomas Jefferson, Madison formed the nation's first political party in the 1790s in opposition to the policies of Alexander Hamilton. Madison served as secretary of state during Jefferson's presidency and was elected president in 1808.