bubble-up

Noun

 * 1) A culvert that is open to the air on top.
 * 2) A commotion or controversy
 * 3) Something that causes Effervescence.
 * 4) An act or process of bubbling up.
 * 1) Something that causes Effervescence.
 * 2) An act or process of bubbling up.
 * 1) Something that causes Effervescence.
 * 2) An act or process of bubbling up.
 * 1) An act or process of bubbling up.
 * 1) An act or process of bubbling up.