bubbler

noun

1. Something that emits bubbles.

   “In proof of this I can assert my success in extinguishing a youthful bubbler near Reykholt church.”

2. An airstone for an aquarium.
3. (Australia)A drinking fountain.

   “There are many types of fountain from which persons may drink by taking the nozzle of the bubbler into the mouth, and this practice is common; furthermore, there are many types in the use of which water from the lips of the consumer falls back onto the bubbler at the point of outlet.”

   “1939 June, Ella Gardner, Short-Time Camps: A Manual for 4-H Leaders, United States Department of Agriculture, Miscellaneous Publication No. 346, page 11, Plans for an inexpensive bubbler or drinking fountain that have been worked out by the 4-H Club department in Massachusetts are shown in figure 4.”

   “1962 February, Repairs and Utilities: Refrigeration, Air Conditioning, Mechanical Ventilation, and Evaporative Cooling, United States Department of the Army, Technical Manual TM 5-670, page 82, Small self-contained water coolers have a limited capacity of cooled water. They are equipped with one bubbler or drinking fountain and have a capacity of about 5 gallons of cooled water per hour or less.”

4. A device used for smoking marijuana, similar to a cannabis pipe but with a section that holds water, like a bong
5. (obsolete)One who cheats.

   “...above all the Jews, jobbers, bubblers, ſubſcribers, projectors, directors, governors, treaſurers, &c.”

6. (US)A freshwater drum (Aplodinotus grunniens), of central North America.