adverb taking the 'to' particle
glug-glug; with a glugging sound
Mimetic word describing the sound or manner of liquid being poured out heavily or running down in a thick, glugging way. Often used with と.
瓶からドボドボと油を注いだ。
I poured oil from the bottle with a glug-glug sound.
雨どいから水がドボドボ流れている。
Water is glugging down from the gutter.