Lewis & Short

gĕnĕrātor, ōris, m. [genero], an engenderer, generator, producer (very rare): nosse autem generatores suos optime poterant, Cic. Univ. 11: Acragasmagnanimūm quondam generator equorum, Verg. A. 3, 704; Vulg. Sap. 13, 3.