Definition of fish bowl:
(n) :
A small, rounded, transparent, and domestic aquarium.
(n) :
(by extension) Any place or event that lacks privacy or is intensely scrutinized.
(n) :
A variety of discussions where participants are organized in concentric circles and take turns where they and others in the same group are allowed to speak according to a set of rules.
(n) :
The central and smallest circle where the speakers are located in some versions of such a discussion.