adverb, adverb taking the 'to' particle
with a crack; cracking; snapping
Mimetic word describing a sharp, repeated cracking or snapping sound, such as breaking branches or cracking knuckles.
彼は指をバキバキと鳴らした。
He cracked his knuckles with a cracking sound.
枝がバキバキに折れた。
The branch broke with a loud crack.