Fishbowl

noun

1. A small, rounded, transparent, and domestic aquarium.
2. (by extension) Any place or event that lacks privacy or is intensely scrutinized.
3. 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.
4. The central and smallest circle where the speakers are located in some versions of such a discussion.