What is "abbahu"

Abbahu () was a Jewish Talmudist, known as an amora, who lived in the Land of Israel, of the 3rd amoraic generation (about 279-320), sometimes cited as R. Abbahu of Caesarea (Ḳisrin). His rabbinic education was acquired mainly at Tiberias, in the academy presided over by R. Johanan, with whom his relations were almost those of a son ( Yer. Berakhot chapter II halachah 1, page 4b in Daniel Bomberg's Venice edition; 12b in current editions; Gittin 44b; Bava Batra 39a). He frequently made pilgrimages to Tiberias, even after he had become well known as rector of the Caesarean Academy (Yer. Shab. chapter VIII halachah 1, page 11a in Bomberg's Venice edition; 54b in current editions; Yer. Pesahim chapter X halachah 1, page 37c in Bomberg's Venice edition).