v. [Echoic, after L. lallāre.] intr. To say ‘lal, lal’; to speak childishly. Hence Lalling vbl. sb. Also attrib.
1878. trans. Ziemssen’s Cycl. Med., XIV. xxxv. 844. When stammering attains such a grade that the speech is thereby rendered very indistinct or entirely unintelligible, it is called lalling (lallatio). Ibid. When the attendants are silly enough to imitate this lalling,… the speech may retain a childish, lalling character.
