The poem is about how she sees the snowflakes, at first she was counting the snowflakes as they fell one by one but as the snowstorm got stronger, they started dancing about making it harder and harder to count them. Emily then got a pencil to help her keep track of the rebels. The rebels in my point of view are the snowflakes rebelling against her. I guess the wind picked up, their flurrying around grew so jolly. So she gave up acting serious. Instead started dancing herself.
The first stanza uses Gustatory, second stanza says that the main part of the poem means to have fun. How ever the overall meaning or analysis to this poem truly states that Emily Dickinson the author is explaining how she had to have fun by the snowstorm.