simple past tense and past participle of bubble in

to mark a response on a form, particularly on a multiple-choice exam, by filling in a circular area (‘bubble’)

Third-person singular simple present indicative form of bubble in

A spherically contained volume of air or other gas, especially one made from soapy liquid. / A small spherical cavity in a solid material. / (by extension) Anything resembling a hollow sphere.

(intransitive) To produce bubbles, to rise up in bubbles (such as in foods cooking or liquids boiling). / (intransitive, figuratively) To churn or foment, as if wishing to rise to the surface.

(motor racing) Holding the last qualifying position with qualification still in progress, and thus liable to lose that position.

plural of bubble

(slang) Sparkling wine; champagne.

Third-person singular simple present indicative form of bubble

simple past tense and past participle of bubble