gum

To stick or seal something using an adhesive substance, or become sticky.

"The old mechanism had gummed up completely."

The firm, pink tissue covering the roots of teeth in the mouth.

"Brush your gums gently to prevent bleeding."

A sweet, flavoured substance for chewing, not swallowing, often in stick form.

"He blew a large bubble with his gum."

A sticky, viscous substance exuded by certain plants, used as an adhesive.

"The envelope flap was sealed with gum."