Howl
来自Big Physics
Middle English houle (verb), probably imitative.
wiktionary
From Middle English howlen, houlen, from Old English *hūlian, from Proto-West Germanic *hūwilōn, from Proto-Germanic *hūwilōną, *hiuwilōną(“to howl”), from Proto-Indo-European *kū-, *kew-(“to howl, scream”).
etymonline
howl (v.)
early 13c., houlen, probably ultimately of imitative origin; similar formations are found in other Germanic languages. Also compare owl. Related: Howled; howling. As a noun from 1590s.
