autumno (incorrectly aut-), āre, v. n. [autumnus],
to cause or bring on autumn (only in the two foll. exs.): corus autumnat, Plin. 2, 47, 47, § 124: aër aestate nimbosā semper quodam modo vernat vel autumnat, id. 2, 50, 51, § 136.