Favonius Look up Favonius at Dictionary.com
personification of the west wind in Roman mythology, from Latin Favonius, which OED says is from Latin favere "to show kindness to" (see favor (v.)); but Klein says by dissimilation from *fovonius, literally "the warming wind," from fovere "to warm" (see fever). The Latin word is the source (via Old High German phonno, 10c., via Vulgar Latin contraction *faonius) of German Föhn "warm, dry wind blowing down Alpine valleys." Related: Favonian.