slabber

To DRABLE, DRAIBLE, v. a. to slabber; to befoul.

From Wilson's Tales of the Borders and of Scotland, Volume XXIV. by Alexander Leighton

Look at him there, the muckle slabber," and she pointed to Gilmour, who was standing with a red-lowering, downcast face, "look at him!

From The House with the Green Shutters by George Douglas Brown

You think you're in the country, where great lubberly brothers slabber and kiss one another when they meet, like a call of sergeants.

From The Way of the World by William Congreve

In modern French bave means "drivel," "slabbering," and the verb baver "to slabber," but the bib is now called bavette.

From Character Sketches of Romance, Fiction and the Drama, Vol. 1 A Revised American Edition of the Reader's Handbook by Ebenezer Cobham Brewer

Then he was taken with a drauling, or slabbering at his mouth, which slabber sometimes would hang at his mouth well nigh half way down to the ground.

From Life and Death of Mr. Badman by John Bunyan