Today, a rabbit hole is specifically defined as
Once a niche literary reference understood only by fans of Victorian children’s literature, the phrase has exploded into everyday vernacular. We speak of falling down a rabbit hole on Wikipedia at 2:00 AM. We warn friends not to go down the rabbit hole of conspiracy forums. We binge an entire season of a Netflix series and emerge, blinking, into the daylight, realizing we just went down a rabbit hole. rabbit hole