köken: Inherited from Old Spanish vermejo (“red”), from Vulgar Latin *vermiclus, syncopated form of Latin vermiculus (“little worm”), from vermis (“worm”), ultimately in reference to Kermes vermilio, a species of scale insect used to make a crimson dye. Compare Portuguese vermelho. Compare also Proto-Slavic *čьrvenъ (“red”), which is a passive participle of *čьrviti (“to dye using *čьrvь”), where *čьrvь…
köken: From Middle Persian [script needed] (bwl /bōr/, “reddish-brown, bay [horse]”), from Proto-Iranian *buHráh, from Proto-Indo-Iranian *bʰruHrás, ultimately from Proto-Indo-European *bʰerH- (“brown”). Cognate with Ossetian бур (bur, “yellow”), Northern Kurdish bor (“grey”), Shughni vůr (“brown, grey”), and the Old Armenian loanword բորենի (boreni, “hyena”).
köken: Attested in local Medieval Latin documents as raudanus, probably of Germanic origin (compare Gothic *𐍂𐌰𐌿𐌳𐌰𐌽 (*raudan), accusative of 𐍂𐌰𐌿𐌸𐍃 (rauþs, “red”)), from Proto-Germanic *raudaz. Cognate with Spanish roano.
El rrey Cástor, que sij́a sobre hũ bon caualo rroán