1.Definition: a period of the year marked by special events or activities in some field
"He celebrated his 10th season with the ballet company", "She always looked forward to the avocado season"
2.Definition: a recurrent time marked by major holidays
"It was the Christmas season"
3.Definition: one of the natural periods into which the year is divided by the equinoxes and solstices or atmospheric conditions
"The regular sequence of the seasons"