The Collaborative International Dictionary
Gargle \Gar"gle\, v. t. [imp. & p. p. Garggled, p. pr. & vb. n. Gargling (?).] [F. gargouiller to dabble, paddle, gargle. Cf. Gargoyle, Gurgle.]
To wash or rinse, as the mouth or throat, particular the latter, agitating the liquid (water or a medicinal preparation) by an expulsion of air from the lungs.
To warble; to sing as if gargling [Obs.]
--Waller.
Wiktionary
n. The act of one who gargles. vb. (present participle of gargle English)
Wikipedia
Gargling (same root as 'gurgle') is the human act in which air from the lungs is bubbled through a liquid in the mouth. It usually requires that the head be tilted back, allowing a mouthful of liquid to sit in the upper throat. The head can be tilted by tilting either the neck or the back, depending on what is comfortable for the gargler. Vibration caused by the muscles in the throat and back of the mouth cause the liquid to bubble and percolate through the throat and mouth cavity.
A study in Japan has shown that gargling water a few times a day will lower the chance of upper respiratory infections such as colds, though some medical authorities are skeptical.
Usage examples of "gargling".
The orcs spoke among themselves in a grunting, gargling language that sounded like someone choking.
The need to see everyone at the same level, gargling in the same ratrace choir, to paraphrase Dylan.
I make gargling noises until I go absolutely completely stark raving drooling babbling mad.
Their stomachs growled like a nightmarish chorus of spirits gargling ectoplasm in the moonlight.
One taan started to make a gargling sound in his throat and then another and another and soon all joined in.
I hear the faint garglings as it fills again, up even with the outside water-line.