Noun
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
.
Verb
To
spend
the
autumn
(
in
a
particular
place
).