From Middle English bawlen, from Old Norse baula (“to low”) and/or Medieval Latin baulō (“bark”, v), both from Proto-Germanic *bau- (“to roar”), from Proto-Indo-European *bau- (“to bark”), conflated with Proto-Germanic *bellaną, *ballijaną, *buljaną (“to shout, low, roar”), from Proto-Indo-European *bʰel- (“to sound, roar”). Cognate with Icelandic baula (“to moo, low”), Swedish böla (“to bellow, low”). More at bell.
- (intransitive) To shout or utter in a loud and intense manner.
- (intransitive) To wail; to give out a blaring cry.
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