Definition of "rabbit on" 
- (verb) To talk on something exceedingly long, annoying the audience.
Use "rabbit on" in a sentence
- "Feifer swoops on Walker like an eagle bearing down on a rabbit on one of those TV nature shows."
- "Once, like another Crusoe, by the edge of the river he came upon a track, -- the faint tracery of a snowshoe rabbit on the delicate snow-crust."