Best answer: Â "The pope was the head of the Western Christian Church."
It is also true that popes sought to exercise their authority over kings and emperors as a part of their claim to supremacy. Â But the main definition of "papal supremacy" has to do with the pope's position as head over the universal (aka "catholic") church. Â The Catechism of the Catholic Church (paragraph 882) sums up the definition of papal supremacy in these words: Â "The Roman Pontiff, by reason of his office as Vicar of Christ, and as pastor of the entire Church has full, supreme, and universal power over the whole Church, a power which he can always exercise unhindered." Â