The story
From great + hammer. Probably modeled on greatsword, greathelm, etc.
Etymology from Wiktionary, CC BY-SA 4.0.
greathammer
Today it means: A gigantic (combat) hammer; a particularly large or powerful hammer. Full definition →
Today it means: A gigantic (combat) hammer; a particularly large or powerful hammer. Full definition →
From great + hammer. Probably modeled on greatsword, greathelm, etc.
Etymology from Wiktionary, CC BY-SA 4.0.