To quickly swallow liquid.
To flow in noisy bursts.
The sound made when a significant amount of liquid is poured suddenly out of something, such as a jug or bottle.
The amount of liquid issued when the "glug" sound is heard.
The sound made when a significant amount of liquid is poured out of a jug, bottle, etc., or when such an amount is swallowed by a person.
To produce saliva.
To show eager anticipation at the expectation of something.