Other forms: fullers
A fuller is the groove running down the blade of a sword. A deep fuller, the fuller of the blade, cut a fuller.
It makes the blade lighter without weakening it, in the same way that a girder is stronger than a bar of the same weight. It is not a blood groove, which is a persistent invention with no basis at all.
1nounfullerThe groove running down the blade of a sword.
“The blacksmith hammered a fuller along the length of the new sword.”
fuller is a groove.
From full in the smithing sense of a tool used to groove hot metal.
From full.
Etymology from Wiktionary, CC BY-SA
Practised in A Song of Ice and Fire