What is "force-fed"

Usage examples of "force-fed".

Smoke was chimneying from volcanic vents, it was absent one of its moons, and the bridge of the gods had collapsed—all but force-fed rock by rock to the orbiting dovin basals tasked with shielding the world from attack.

He had been starved, too, for learning, and now there were books everywhere, because Mary was a teacher down to her fragile bones, and she had force-fed him knowledge as fast as he could gulp it down.