sil: or sili, = seselis.sil: silis, n.,I a kind of yellowish earth, yellow ochre, Plin. 33, 12, 56, § 158; Vitr. 7, 11; Veg. 5, 26; 5, 39; 6, 28 fin.; Aus. Idyll. 12, Gram. 8.