1. the season of the year between summer and winter, lasting from the autumnal equinox to the winter solstice and from september to december in the northern hemisphere; fall.
2. A period of maturity verging on decline.
3. of, having to do with, occurring in, or appropriate to the season of autumn: autumn foliage; autumn harvests.
4. grown during the season of autumn: autumn crops.

1. traditionally the third of the four seasons, when deciduous trees lose their leaves; typically regarded as being from september 24 to december 22 in parts of the northern hemisphere, and the months of march, april and may in the southern hemisphere.
2. of or relating to autumn.

1. the third season of the year, or the season between summer and winter, often called “the fall.” astronomically, it begins in the northern temperate zone at the autumnal equinox, about september 23, and ends at the winter solstice, about december 23; but in popular language, autumn, in america, comprises september, october, and november.
2. the harvest or fruits of autumn.
3. the time of maturity or decline; latter portion; third stage.

1. the third season of the year, or the season between summer and winter: often called fall, as being the time of the falling of the leaves.
2. figuratively
3. A period of maturity, or of incipient decay, abatement, or decline: as, the autumn of life.

1. the season when the leaves fall from the trees