Lewis & Short

†† gurdus, i, m. [Spanish], a dolt, jolterhead, numskull: gurdos, quos pro stolidis accipit vulgus, ex Hispania duxisse originem audivi, Quint. 1, 5, 57; cf.: gurdus lentus, inutilis, Gloss. Isid.; Laber. ap. Gell. 16, 7, 8 (Com. Fragm. v. 13 Rib.).