pushing away unwanted food with chopsticks
A specific chopstick manner violation: using chopsticks to push aside or move food you don't want to eat. Considered rude in Japanese dining etiquette.
You should avoid pushing food away with your chopsticks as a matter of dining etiquette.
Compound of 撥ね (hane, 'to push away') and 箸 (hashi, 'chopsticks'). The exact historical derivation is uncertain, but the term directly describes the action.