‘Well-sharpened’
According to La Tavola Ritonda, when Charlemagne came to Britain, he found statues of Galahad, Amoroldo, and other warriors in front of Leverzep.
One of his noblemen took the sword hanging around Amoroldo’s statue and named it ‘Fulberta’, meaning ‘well-sharpened’.
Source
La Tavola Ritonda | 1325–1350