Glug is a 4 letter English word. It's valid Words with friends word worth 10 points.
You can make 15 anagrams from letters in glug (gglu).
First recorded in 1890-95; imitative
Robin took it without more ado and putting it to his lips, tilted his head back, while that which was within said "glug!"
He was standing, concealed behind a rock, at the mouth of the cave of Wug, daughter of glug.
Not one leaf moving in the tules; all mighty still; they could hear the Injun pumping up blood, glug—glug—glug!