arenosus
From LSJ
ărēnōsus: a, um, adj., v. harenosus.
ărēnōsus,¹³ a, um (arena), plein de sable, sablonneux : Virg. En. 4, 257 ; Ov. M. 14, 82 ; arenosior, -issimus Plin. 33, 101 ; 27, 20 || subst. ărēnōsum, ī, n., terrain sablonneux : Sall. J. 48, 3.