Webster’s Revised Unabridged Dictionary · 1913
Morbillous
Mor·bil′lous (·bĭl′lŭs), a. [LL. morbilli measles, dim. of L. morbus disease: cf. F. morbilleux.] Pertaining to the measles; partaking of the nature of measels, or resembling the eruptions of that disease; measly.