also: ぶるり
adverb taking the 'to' particle, adverb
with a vroom; with a sudden shaking
Onomatopoeic adverb describing a sudden, powerful vibration or roaring sound, often from an engine or a forceful shake. Used with と.
エンジンがぶるんと音を立ててかかった。
The engine started with a vroom.
犬が体をぶるんと震わせて水を切った。
The dog shook itself with a sudden shiver to get the water off.
Onomatopoeic formation from the sound of a sudden vibration or roar. The exact origin is uncertain.