galeasia Save DMLBS Du Cange galeasia [cf. It. galeaza, Fr. galéasse] , galliass, large galley. 1478 capitanei et patroni unius ~ie de Neapole ‥ in portu ‥ Southamptonie (Pat) Foed. XII 59a. GALEASIA, Galeatia. Vide Galea.