Source : Webster's Revised Unabridged Dictionary (1913)

Glaver \Glav"er\, v. i. [Of Celtic origin; cf. W. glafr
   flattery.]
   1. To prate; to jabber; to babble. [Obs.]

            Here many, clepid filosophirs, glavern diversely.
                                                  --Wyclif.

   2. To flatter; to wheedle. [Obs.]

            Some slavish, glavering, flattering parasite.
                                                  --South.