Lewis Short
sug-grunda | subg- | sug-grundium | suggrundātio (noun F) : (), , cf. grando; Sanscr. hrāduni, storm; Gr. χάλαζα, hail
* The lower border of a roof, the eaves, Varr. R. R. 3, 3, 5; Vitr. 10, 21; Dig. 9, 3, 5, § 6; 50, 16, 242, § 1.—Called also , Vitr. 2, 9, 16; Plin. 25, 13, 102, § 160; and , Vitr. 4, 2.
Charlton T. Lewis, Charles Short, A Latin Dictionary