verb (used without object) 1. to express mirth, pleasure, derision, or nervousness with an audible, vocal expulsion of air from the lungs that can range from a loud burst of sound to a series of quiet chuckles and is usually accompanied by characteristic facial and bodily movements.
The time when fall starts is between summer and winter. As with the other seasons, its commencement differs and is based on the hemisphere you are in. Commencement Dates. In astronomical terms the season begins on September 22 up to November 22 in the Northern Hemisphere.
Alerts In Effect. Autumn Begins Early. Autumn begins on September 23, but it arrives earlier than that at Rocky Mountain National Park. Autumn is a time of changes, especially weather-related changes, across all the altitudes in the park.