the.com/pontiff

means A term for the Pope, the head of the Catholic Church, as its chief 'bridge-builder' between the earthly and the divine.

from From Latin 'pontifex,' a high priest in ancient Rome. The literal breakdown is 'pons' (bridge) plus a root related to 'facere' (to make), so 'bridge-maker.' Why priests were called that is actually debated among scholars — one old guess ties it to priests overseeing a sacred bridge over the Tiber, but this is far from certain. The title later got borrowed wholesale into Christian church hierarchy, eventually narrowing to mean specifically the Pope.