What is the name of the sound when the last remaining drops of water are about to drain down the plug hole of a basin when the plug is removed?
Here is a sample. The last part is not loud enough for one to hear that characteristic sound.
EDIT (FF): Here's a better sound sample, where the change in tone just at the end is really clear.
Best Answer
Right from when the water first starts to suck air into the eddy going down a plug-hole, the sound it makes is gurgling - defined by OED as the noise made by liquid escaping intermittently from a vessel.
Personally, I call the sound made at the very end a glug (OED: a word formed to imitate an inarticulate sound).
Glug functions as a verb, as well as a noun. Obviously, if water glugs, that just means the water is making that sound. But in another common usage, to glug means to drink (often, the last drops of) something noisily and/or hastily - glug the last dregs in a glass of beer, for example.