Green’s Dictionary of Slang

gum n.1

[SE gum]

1. [mid-18C–mid-19C] impertinent, abusive talk, chatter; thus one who talks impertinently.

2. [mid–late 19C] (US) a trick or deception; occas. attrib.

In compounds

gum-raggem (n.) [rag v.1 (1a)]

[mid-19C] (UK Und.) abusive talk.

SE in slang uses

In compounds

gum action (n.) [-action sfx]

[1940s] (US black) conversation, talk.

gum beat/-beater/-beating

see separate entries.

gum-digger (n.)
gum-puncher (n.)

[1950s+] (Aus.) a dentist.

gum-smasher (n.)

[late 19C–1920s] a dentist.

gumsuck/-sucker/-sucking

see separate entries.

gum-tickler (n.)

1. [early–mid-19C] (US) an alcoholic drink.

2. [late 19C] (orig. US) a dentist.

In phrases

beat one’s gum (v.)

see separate entry.