means A male sheep, or by extension the act of driving or forcing something forward with great force, as in ramming a door.

from From Old English 'ramm,' the word for a male sheep, with cousins across the old Germanic tongues. Because rams charge headfirst, the name leapt naturally to anything that batters — by medieval times a 'battering ram' was a heavy beam (sometimes capped with an iron ram's head) swung against castle walls, and the verb 'to ram' followed from there.