rosicchiare bedeutet auf Englisch

gnaw [gnawed, gnawed, gnawing, gnaws]▼(to bite something persistently)
verb
[UK: nɔː] [US: ˈnɒ]

nibble [nibbled, nibbling, nibbles]▼(eat with small bites)
verb
[UK: ˈnɪb.l̩] [US: ˈnɪb.l̩]