fish bowl

Short definition from Wiktionary

Noun

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