The sound made from a large container of liquid (like a.gallon of milk or OJ) when it is first opened and poured out... the noise that is made is like "goonk goonk goonk goonk goonk"
Kids game. Taking turns at mealtime to get the "goonks" from freshly opened beverages ... and there was hell to pay if someonestole the goonks from then jug before their turn to receive them!! I'm telling Mom!!
A facial disfigurement. Someone who suffers from 'gloonkey' has a lower jaw that protrudes further than the upper jaw. The word is specifically defined so that if a sufferer pronounces it, their condition is expressed to the extreme due to the gurning involved, and thus other people who see it will understand the meaning on a visual basis.
"have you seen morrissey from the smiths? he has a bad case of gloonkey..."
"i'm sure bruce springsteen has gloonkey..."