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.