1. (

• mumbling ,
• gumming

) ineffectual chewing (as if without teeth) ;

1. (

• gum

) cover, fill, fix or smear with or as if with gum; "if you gum the tape it is stronger" ;

2. (

• mumble ,
• gum

) grind with the gums; chew without teeth and with great difficulty; "the old man had no teeth left and mumbled his food" ;

3. (

• gum

) become sticky ;

4. (

• gum

) exude or form gum; "these trees gum in the Spring" ;