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.
Senators Henry Clay and Daniel Webster were prominent Whigs, as were four presidents (William Henry Harrison, John Tyler, Zachary Taylor, and Millard Fillmore). The party fell into disunity in the 1850s over slavery; some former Whigs, including Abraham Lincoln, then joined the new Republican party.