1. the season between summer and winter when leaves fall and temperatures become cooler

1. relating to or occurring in autumn

Examples

• The leaves turn beautiful colors in autumn.
• We planted bulbs in the autumn garden.
• Autumn is my favorite season of the year.
• The autumn harvest was particularly good this year.
• She wore a warm autumn coat to school.
• The autumn air felt crisp and cool.
• Many animals prepare for winter during autumn.