|1.||(in the US and Canada) February 2nd, when, according to tradition, the groundhog emerges from hibernation; if it sees its shadow, it returns to its burrow for six weeks as a sunny day indicates a late spring, while a cloudy day would mean an early spring|
|2.||a situation in which events are or appear to be continually repeated|
|[C20: sense 2 from the 1993 film Groundhog Day, in which the lead character experiences the same day repeatedly]|
February 2. According to the legend of Groundhog Day, if a groundhog (a woodchuck) comes out of his hole on that day and sees his shadow, six more weeks of winter will follow. If no shadow appears, there will be an early spring.