Noun
Traditionally
the
third
of
the
four
seasons
,
when
deciduous
trees
lose
their
leaves
,
and
temperatures
and
daylight
hours
decrease
;
typically
regarded
as
spanning
the
months
of
September
,
October
,
and
November
in
the
Northern Hemisphere
,
and
the
months
of
March
,
April
and
May
in
the
Southern Hemisphere
.
Verb
To
spend
the
autumn
(
in
a
particular
place
).