Meaning of “gum” - Learner’s Dictionary

gum

noun uk us /ɡʌm/
MOUTH [ C ]

B2 the hard, pink part inside your mouth that your teeth grow out of:

gum disease
SWEET [ U ] (also chewing gum)

a sweet substance that you chew (= bite repeatedly) but do not swallow:

a stick of gum
STICKY [ U ]

a sticky substance like glue, used for sticking papers together

→ See also bubble gum

(Definition of “gum noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)