BUB
Etymology 1
Probably imitative of the sound of drinking.
Noun
bub (uncountable)
(slang, historical) An alcoholic malt liquor, especially beer.
Etymology 2
Noun
bub (plural bubs)
A woman's breast.
Etymology 3
Noun
bub (plural bubs)
A term of familiar address; bubba; bubby.
A young brother; a little boy; a familiar term of address for a small boy.
Etymology 4
Noun
bub (plural bubs)
(Australia, slang) A baby.
Etymology 5
Noun
bub (plural bubs)
Abbreviation of bubble.
(slang) champagne; bubbly.
Verb
bub (third-person singular simple present bubs, present participle bubbing, simple past and past participle bubbed)
(obsolete) To throw out in bubbles; to bubble.
Source: Wiktionary
Bub, n.
Definition: Strong malt liquor. [Cant] Prior.
Bub, n. Etym: [Cf. 2d Bubby.]
Definition: A young brother; a little boy; -- a familiar term of address of
a small boy.
Bub, v. t. Etym: [Abbrev. from Bubble.]
Definition: To throw out in bubbles; to bubble. [Obs.] Sackville.
Source: Webster’s Unabridged Dictionary 1913 Edition