Laterâlis, & hoc laterâle, pen. prod. Belenging to the side. vt, Dolor lateralis. Plin. A slitch: the pleurisie.
Lewis and Short: Latin dictionary
lătĕrālis, e, adj. [2. latus], of or belonging to the side, lateral. I.Adj. (ante- and post-class.): lateralis dolor, Enn. ap. Victor. p. 1963 P. (Ann. v. 601 Vahl.; for which: lateris dolor, Plin. 21, 21, 89, 155): cingula, Calp. Ecl. 6, 40.—II.Subst.: lătĕrālĭa, ĭum, n., saddle-bags, Dig. 32, 1, 102.
