noun
licking one's chopsticks
A specific breach of Japanese table manners; considered rude and unhygienic.
ねぶり箸は、食事のマナーとして避けるべき行為だ。
Licking your chopsticks is an act to avoid as part of dining etiquette.
Kanji spelling using 舐る (to lick); less common and may be harder to read.
Compound of ねぶり (continuative form of ねぶる, 'to lick') and 箸 (はし, 'chopsticks'). The reading ねぶりばし results from rendaku.