Lewis & Short

Ĕrătosthĕnes, is, m., = Ἐρατοσθέϝης, a celebrated geographer, poet, and philosopher of Alexandria, under Ptolemy Euergetes, Varr. R. R. 1, 2, 3; Cic. Att. 2, 6; Caes. B. G. 6, 24, 2; Plin. Elench. 2; 5; 2, 108, 112; Quint. 1, 1, 16; 11, 2, 14 al.