noun
definition
A quiet or unintelligible vocalization; a low tone of voice.
example
All I could hear was a mumble from the next room.
verb
definition
To speak unintelligibly or inaudibly; to fail to articulate.
example
Please try not to mumble so I can hear you better.
definition
To chew something gently with closed lips.
Examples of mumble in a Sentence
At first I couldn't understand Howie's mumble but then it became clearer.
Glover was used as the model for Mumble, the tap-dancing penguin, in the animated movie Happy Feet.
Mike was heard to mumble something about getting a pedicure, but I may have been mistaken.
He heard Arnie's mumble, Lana's voice, more mumbling in response.
Us was about butterflies flutter above plunging my arms forward winds i mumble.
It is easy enough for you to make your code work by moving the definition of struct mumble above the prototype.