g, l, u are letters that make 'glug'
lug, Lug, Lu are words within 'glug'
glugs is a word created by adding a letter to 'glug'
1 possible definitions for 'glug'
Under this definition, glug is a verb and has the following properties:
'glug' can be a type of sound, go.
"the wine bottles glugged"