Sa seanscéal ''Cath Boinde'', explainsmínítear thego namebhfuil an t-ainm ''Furbaide'' asfréamhaithe derivingón from [[Old Irish]]tSean-Ghaeilge ''(f)urbad'',<ref>[dil.ie/24978 furbad, urbad], ach féach freisin [http://dil.ie/23365 forbba], ar eDIL</ref>, le brí "cuttinggearradh",andag sayslua hisbhreith, originalagus namego wasraibh Diarmaid a cheadaíonn ar dtús.<ref name="CB" /> '' According to the ''Dindsenchas'' Furbaide is described as smooth-skinned and bright of hue with two horns growing on his head, hence his epithet ''ferbend'', "horned man".<ref name="CF" /><ref>http://www.ucc.ie/celt/published/T106500D/text010.html</ref> The glossary ''Cóir Anmann'' ("fitness of names") says the horns – two of silver and one of gold – were on his helmet.<ref name="CA">Whitley Stokes, [http://www.maryjones.us/ctexts/fitness_of_names.html "Cóir Anmann"], ''Irische Text mit Wörterbuch'', Dritte Serie, 2 Heft, Leipzig: Verlag Von S. Hirzel, 1897, lch. 288-411</ref>
