Green’s Dictionary of Slang

1. (US) one who is excessively greedy.

1914

Ade ‘The New Fable of the Father Who Jumped In’ in Ade’s Fables 90: Father classified the would-be Child-in-Law as a Gobble, which means a Home-Wrecker who is still learning his Trade.

2. an act of fellatio; both hetero- and homosexual.

c.1935		Bellyhoo [comic strip] [illus. of a man fellating a midget] Gobble McNance goes on a diet.
1971		(con. WWII) B. Aldiss Soldier Erect 82: You like gobble, Johnny? I give you nice gobble? Two rupee.
1973		B.S. Johnson All Bull 22: A thick drunken Liverpudlian called Scruggs used to pay Lewis half-a-crown for a gobble every so often.
2005		B. Hare Urban Grimshaw viii: Nosh Blowjob, gobble, oral sex.
2021		A. Parks April Dead 360: He’d end up giving gobbles to old men [...] to buy something to eat.
2024		J. Meades Empty Wigs (t/s) 917: I give him freebie gobble.

3. a fellator or fellatrix.

2017

A. Parks Bloody January 297: ‘Christ, if I’d known she was that good a gobble I’d have kept her on’.