Meaning

verb shout loudly and without restraint

verb make a raucous noise

verb cry loudly

originFrom Middle English baulen, from Old Norse baula (“to bellow”) and/or Medieval Latin baulō (“to bark”), both from Proto-Germanic *bau- (“to roar”), conflated with Proto-Germanic *bellaną, *ballijaną, *buljaną (“to shout, low, roar”), from Proto-Indo-European *bʰel- (“to sound, roar”). Cognate with Faroese belja (“to low”), Icelandic baula (“to moo, low”), Swedish böla (“to bellow, low”). More at…

Etymology from Wiktionary, CC BY-SA 3.0