subs. (old).See quot.: also BABBA.
1598. FLORIO, A Worlde of Wordes, s.v. Pappa
the first word children vse, as with vs dad or daddie or BAB.
1863. C. KINGSLEY, The Water-Babies, ii. 47. Sitting down and crying for his BABA (though he never had had any BABA to cry for).