[Basque] A Basque evil spirit in the form of a bull, but occasionally in the form of a human being. At night, especially during stormy weathers, he emerges from his cave. Also named Aatxegorri (young red bull).
AATXE
Meaning of AATXE in English
Encyclopedia Mythica English dictionary. Английский энциклопедический словарь греческой мифологии. 2012