\Au*tum"nal\, a. [L. auctumnalis, autumnalis: cf. F.
automnal.]
1. Of, belonging to, or peculiar to, autumn; as, an autumnal
   tint; produced or gathered in autumn; as, autumnal fruits;
   flowering in autumn; as, an autumnal plant.

         Thick as autumnal leaves that strow the brooks In
         Vallombrosa.                          --Milton.

2. Past the middle of life; in the third stage.

         An autumnal matron.                   --Hawthorne.

{Autumnal equinox}, the time when the sun crosses the
   equator, as it proceeds southward, or when it passes the
   autumnal point.

{Autumnal point}, the point of the equator intersected by the
   ecliptic, as the sun proceeds southward; the first point
   of Libra.

{Autumnal signs}, the signs Libra, Scorpio, and Sagittarius,
   through which the sun passes between the autumnal equinox
   and winter solstice.