v.1. To eat something by taking small bites: The mice have been nibbling at the curtains.
2. To eat a small amount of something, especially unenthusiastically: She only nibbled at her peas.
3. To bite something but not break the surface; nip at something: My date nibbled at my ear during the movie.
v.1. To eat something by taking small, quick bites, often as a snack or a light meal: Dinner wasn't for another two hours, so I nibbled on some potato chips. The rabbit nibbled on a carrot.
2. To bite something but not break the surface: Nervously, I nibbled on my pencil's eraser during the test.