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2.
The bubbly sound a guinea pig (cavy) makes when it is happy.
"I heard a frobble from my guinea pig's hutch."
"The guinea pig frobbled contendedly"
by Glaucon August 29, 2006
 
1.
frolicking and hobbling at the same time.
The dwarf frobbled across the lawn with a crutch in his hand to the music of his own mumbling.
by Evans Atwood January 22, 2004