sellāris

e, adj.

sella

I. of or belonging to a seat (post-class.): gestatio, Cael. Aur. Tard. 1, 4, 92: jumenta, Veg. 2, 28, 34; 6, 7, 5.—Subst.: sellāris, is, m., a saddlehorse, Vit. Caes. Arel. 2, 2, 20.
Lewis & Short
A Latin Dictionary, 1879
An open-access project