Webster’s Revised Unabridged Dictionary · 1913 Bub Bub (bŭb), n. Strong malt liquor. [Cant] Prior. Bub, n. [Cf. 2d Bubby.] A young brother; a little boy; — a familiar term of address of a small boy. Bub, v. t. [Abbrev. from Bubble.] To throw out in bubbles; to bubble. [Obs.] Sackville. ‹ Buat Bubale ›