ビロビロ

adverb, adverb taking the 'to' particle

flapping; waving; fluttering; waggling

Onomatopoeic word describing something thin and flexible moving loosely or repeatedly, such as a tongue, cloth, or paper.

• 犬いぬが舌したをビロビロ出だして走はしってきた。

  The dog came running with its tongue lolling out.

• 風かぜでカーテンがビロビロ揺ゆれている。

  The curtain is fluttering in the wind.

adverb, adverb taking the 'to' particle, noun

idling sloppily; lovestruck

Archaic usage. Describes a person lazing about in a slovenly manner or being infatuated and acting foolishly. Rare in modern Japanese.

• 昔むかしの小しょう説せつでは、恋こいに浮うかれてビロビロしている若わか者ものが描えがかれている。

  In old novels, a young man acting foolishly in love is described as ビロビロしている.