1. [adj]  covered with or resembling small bubbles as from being agitated by beating or heating; "the bubbling candy mixture"; "a cup of foaming cocoa"; "frothy milkshakes"; "frothy waves"; "spumy surf"
2. [adj]  marked by high spirits or excitement; "his fertile effervescent mind"; "scintillating personality"; "sparkling conversation"; "a row of sparkly cheerleaders"
3. [adj]  emitting or filled with bubbles as from carbonation or fermentation; "bubbling champagne"; "foamy (or frothy) beer"

BUBBLING is a 8 letter word that starts with B.