bubby

Likely a babble word; compare dialectal German Bübbi (“teat”). Some older references connected the word to French poupe, but this is considered "very doubtful" by the OED. Compare Latin pūpa (“little girl”).

Perhaps from brother, as pronounced by young children who are not yet able to properly pronounce its complex consonants, but alternatively perhaps from Pennsylvania German; see bub. Compare sissy.

Variant spelling. (From Yiddish.)